<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.vectrusinc.com/role/AgreementsWithFormerParent" xlink:href="vec-20160930.xsd#AgreementsWithFormerParent" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CommitmentsAndContingencies" xlink:href="vec-20160930.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CommitmentsAndContingenciesAdditionalInformationDetails" xlink:href="vec-20160930.xsd#CommitmentsAndContingenciesAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CompositionOfCertainFinancialStatementCaptions" xlink:href="vec-20160930.xsd#CompositionOfCertainFinancialStatementCaptions" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CompositionOfCertainFinancialStatementCaptionsScheduleOfCompensationAndOtherEmployeeBenefitsDetails" xlink:href="vec-20160930.xsd#CompositionOfCertainFinancialStatementCaptionsScheduleOfCompensationAndOtherEmployeeBenefitsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CompositionOfCertainFinancialStatementCaptionsScheduleOfOtherAccruedLiabilitiesDetails" xlink:href="vec-20160930.xsd#CompositionOfCertainFinancialStatementCaptionsScheduleOfOtherAccruedLiabilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CompositionOfCertainFinancialStatementCaptionsTables" xlink:href="vec-20160930.xsd#CompositionOfCertainFinancialStatementCaptionsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CondensedConsolidatedBalanceSheets" xlink:href="vec-20160930.xsd#CondensedConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:href="vec-20160930.xsd#CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:href="vec-20160930.xsd#CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited" xlink:href="vec-20160930.xsd#CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/CondensedConsolidatedStatementsOfIncomeUnaudited" xlink:href="vec-20160930.xsd#CondensedConsolidatedStatementsOfIncomeUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/Debt" xlink:href="vec-20160930.xsd#Debt" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DebtAdditionalInformationDetails" xlink:href="vec-20160930.xsd#DebtAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DebtScheduleOfCarryingValuesAndFairValuesOfTermFacilityDetails" xlink:href="vec-20160930.xsd#DebtScheduleOfCarryingValuesAndFairValuesOfTermFacilityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DebtTables" xlink:href="vec-20160930.xsd#DebtTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DerivativeInstruments" xlink:href="vec-20160930.xsd#DerivativeInstruments" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DerivativeInstrumentsAdditionalInformationDetails" xlink:href="vec-20160930.xsd#DerivativeInstrumentsAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DerivativeInstrumentsSummaryOfAmountAtFairValueAndLocationOfDerivativeInstrumentDetails" xlink:href="vec-20160930.xsd#DerivativeInstrumentsSummaryOfAmountAtFairValueAndLocationOfDerivativeInstrumentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DerivativeInstrumentsTables" xlink:href="vec-20160930.xsd#DerivativeInstrumentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPolicies" xlink:href="vec-20160930.xsd#DescriptionOfBusinessAndSummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails" xlink:href="vec-20160930.xsd#DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesPolicies" xlink:href="vec-20160930.xsd#DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesSummaryOfCumulativeCatchUpAdjustmentsDetails" xlink:href="vec-20160930.xsd#DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesSummaryOfCumulativeCatchUpAdjustmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTables" xlink:href="vec-20160930.xsd#DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/DocumentAndEntityInformation" xlink:href="vec-20160930.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/EarningsPerShare" xlink:href="vec-20160930.xsd#EarningsPerShare" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/EarningsPerShareReconciliationOfBasicAndDilutedWeightedAverageSharesOutstandingDetails" xlink:href="vec-20160930.xsd#EarningsPerShareReconciliationOfBasicAndDilutedWeightedAverageSharesOutstandingDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/EarningsPerShareTables" xlink:href="vec-20160930.xsd#EarningsPerShareTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/Goodwill" xlink:href="vec-20160930.xsd#Goodwill" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/GoodwillDetails" xlink:href="vec-20160930.xsd#GoodwillDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/IncomeTaxes" xlink:href="vec-20160930.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/IncomeTaxesAdditionalInformationDetails" xlink:href="vec-20160930.xsd#IncomeTaxesAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/PostEmploymentBenefitPlans" xlink:href="vec-20160930.xsd#PostEmploymentBenefitPlans" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/PostEmploymentBenefitPlansDetails" xlink:href="vec-20160930.xsd#PostEmploymentBenefitPlansDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/Receivables" xlink:href="vec-20160930.xsd#Receivables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/ReceivablesAdditionalInformationDetails" xlink:href="vec-20160930.xsd#ReceivablesAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/ReceivablesScheduleOfReceivablesDetails" xlink:href="vec-20160930.xsd#ReceivablesScheduleOfReceivablesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/ReceivablesTables" xlink:href="vec-20160930.xsd#ReceivablesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/RecentAccountingPronouncements" xlink:href="vec-20160930.xsd#RecentAccountingPronouncements" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/RecentAccountingPronouncementsTables" xlink:href="vec-20160930.xsd#RecentAccountingPronouncementsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/StockBasedCompensation" xlink:href="vec-20160930.xsd#StockBasedCompensation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/StockBasedCompensationAdditionalInformationDetails" xlink:href="vec-20160930.xsd#StockBasedCompensationAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/StockBasedCompensationScheduleOfAssumptionsUtilizedDetails" xlink:href="vec-20160930.xsd#StockBasedCompensationScheduleOfAssumptionsUtilizedDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/StockBasedCompensationScheduleOfImpactOfStockBasedCompensationDetails" xlink:href="vec-20160930.xsd#StockBasedCompensationScheduleOfImpactOfStockBasedCompensationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/StockBasedCompensationScheduleOfNonQualifiedStockOptionsAndRestrictedStockUnitsActivityDetails" xlink:href="vec-20160930.xsd#StockBasedCompensationScheduleOfNonQualifiedStockOptionsAndRestrictedStockUnitsActivityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/StockBasedCompensationTables" xlink:href="vec-20160930.xsd#StockBasedCompensationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/SubsequentEvents" xlink:href="vec-20160930.xsd#SubsequentEvents" xlink:type="simple" />
  <link:roleRef roleURI="http://www.vectrusinc.com/role/SubsequentEventsDetails" xlink:href="vec-20160930.xsd#SubsequentEventsDetails" xlink:type="simple" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/AgreementsWithFormerParent" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CommitmentsAndContingencies" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CommitmentsAndContingenciesAdditionalInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CompositionOfCertainFinancialStatementCaptions" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CompositionOfCertainFinancialStatementCaptionsScheduleOfCompensationAndOtherEmployeeBenefitsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_e20e4396-1ab7-d9ec-b779-e1a72ae620da" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccruedSalariesCurrent" xlink:label="loc_us-gaap_AccruedSalariesCurrent_bbb88956-2391-237d-9ac1-fd1ab1783864" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_e20e4396-1ab7-d9ec-b779-e1a72ae620da" xlink:to="loc_us-gaap_AccruedSalariesCurrent_bbb88956-2391-237d-9ac1-fd1ab1783864" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccruedBonusesCurrent" xlink:label="loc_us-gaap_AccruedBonusesCurrent_381e9a09-9d82-0fc9-9fa4-97c52c76ccd3" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_e20e4396-1ab7-d9ec-b779-e1a72ae620da" xlink:to="loc_us-gaap_AccruedBonusesCurrent_381e9a09-9d82-0fc9-9fa4-97c52c76ccd3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccruedEmployeeBenefitsCurrent" xlink:label="loc_us-gaap_AccruedEmployeeBenefitsCurrent_b1838057-d66f-5a3a-6991-d5ab898b2fba" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_e20e4396-1ab7-d9ec-b779-e1a72ae620da" xlink:to="loc_us-gaap_AccruedEmployeeBenefitsCurrent_b1838057-d66f-5a3a-6991-d5ab898b2fba" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CompositionOfCertainFinancialStatementCaptionsScheduleOfOtherAccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_567bfdaf-7a71-0a8c-e33e-b9f7b4096843" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccruedInsuranceCurrent" xlink:label="loc_us-gaap_AccruedInsuranceCurrent_2d55e617-a853-7082-31db-95229549e88e" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_567bfdaf-7a71-0a8c-e33e-b9f7b4096843" xlink:to="loc_us-gaap_AccruedInsuranceCurrent_2d55e617-a853-7082-31db-95229549e88e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_cd1623dd-4d7a-16b7-05d7-1ab0d4540c5c" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_567bfdaf-7a71-0a8c-e33e-b9f7b4096843" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_cd1623dd-4d7a-16b7-05d7-1ab0d4540c5c" xlink:type="arc" />
    <link:loc xlink:href="vec-20160930.xsd#vec_AccruedInsuranceFinancingCurrent" xlink:label="loc_vec_AccruedInsuranceFinancingCurrent_6fb414d0-e9ef-d344-3234-9d0f1188625d" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_567bfdaf-7a71-0a8c-e33e-b9f7b4096843" xlink:to="loc_vec_AccruedInsuranceFinancingCurrent_6fb414d0-e9ef-d344-3234-9d0f1188625d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_3b18b100-5c23-de0c-2b69-6ea7677a5a64" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_567bfdaf-7a71-0a8c-e33e-b9f7b4096843" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_3b18b100-5c23-de0c-2b69-6ea7677a5a64" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CompositionOfCertainFinancialStatementCaptionsTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_08bee809-e27e-48c3-da2d-5d52948eb470" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_dbbeeff9-fd43-6151-195d-0532728ac216" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_08bee809-e27e-48c3-da2d-5d52948eb470" xlink:to="loc_us-gaap_AssetsCurrent_dbbeeff9-fd43-6151-195d-0532728ac216" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_Cash" xlink:label="loc_us-gaap_Cash_31b089b6-cab9-7e98-65c7-eea8ed3f6029" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_dbbeeff9-fd43-6151-195d-0532728ac216" xlink:to="loc_us-gaap_Cash_31b089b6-cab9-7e98-65c7-eea8ed3f6029" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_bbf813cd-8531-daad-0362-0abcbe609fb5" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_dbbeeff9-fd43-6151-195d-0532728ac216" xlink:to="loc_us-gaap_ReceivablesNetCurrent_bbf813cd-8531-daad-0362-0abcbe609fb5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear" xlink:label="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_a5fbf704-1361-58a5-8fee-e60f445bd431" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_dbbeeff9-fd43-6151-195d-0532728ac216" xlink:to="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_a5fbf704-1361-58a5-8fee-e60f445bd431" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_fdb77e30-ba68-0e41-abc1-70858b11de5b" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_dbbeeff9-fd43-6151-195d-0532728ac216" xlink:to="loc_us-gaap_OtherAssetsCurrent_fdb77e30-ba68-0e41-abc1-70858b11de5b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:label="loc_us-gaap_AssetsNoncurrent_077d07a8-79e6-ef7c-e812-5f2b45805594" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_08bee809-e27e-48c3-da2d-5d52948eb470" xlink:to="loc_us-gaap_AssetsNoncurrent_077d07a8-79e6-ef7c-e812-5f2b45805594" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_68e7c3c1-9b8d-84fe-3a5c-d69c15dfe7a2" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_077d07a8-79e6-ef7c-e812-5f2b45805594" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_68e7c3c1-9b8d-84fe-3a5c-d69c15dfe7a2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_d723083e-f7a3-6d89-9926-32afaa010d8a" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_077d07a8-79e6-ef7c-e812-5f2b45805594" xlink:to="loc_us-gaap_Goodwill_d723083e-f7a3-6d89-9926-32afaa010d8a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_e6ade192-0839-bdd8-d08b-20387a0e8201" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_077d07a8-79e6-ef7c-e812-5f2b45805594" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_e6ade192-0839-bdd8-d08b-20387a0e8201" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_04e17fb3-9b77-1c98-f460-7f5dd0c01008" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_6d3ec995-5062-ef92-dd72-b570c1eafdc8" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_04e17fb3-9b77-1c98-f460-7f5dd0c01008" xlink:to="loc_us-gaap_Liabilities_6d3ec995-5062-ef92-dd72-b570c1eafdc8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_a859bb84-8118-88ec-5136-83fdb14e8f32" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_6d3ec995-5062-ef92-dd72-b570c1eafdc8" xlink:to="loc_us-gaap_LiabilitiesCurrent_a859bb84-8118-88ec-5136-83fdb14e8f32" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_222239a2-3ddd-5e4f-4ae1-b11c60b29d92" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a859bb84-8118-88ec-5136-83fdb14e8f32" xlink:to="loc_us-gaap_AccountsPayableCurrent_222239a2-3ddd-5e4f-4ae1-b11c60b29d92" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_BillingsInExcessOfCostCurrent" xlink:label="loc_us-gaap_BillingsInExcessOfCostCurrent_cc0dcaad-a5ee-4174-dddb-08f9eef5499b" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a859bb84-8118-88ec-5136-83fdb14e8f32" xlink:to="loc_us-gaap_BillingsInExcessOfCostCurrent_cc0dcaad-a5ee-4174-dddb-08f9eef5499b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_e20e4396-1ab7-d9ec-b779-e1a72ae620da" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a859bb84-8118-88ec-5136-83fdb14e8f32" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_e20e4396-1ab7-d9ec-b779-e1a72ae620da" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_c3b0ebc6-4623-301c-8c00-aa6b946b1d6a" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a859bb84-8118-88ec-5136-83fdb14e8f32" xlink:to="loc_us-gaap_LongTermDebtCurrent_c3b0ebc6-4623-301c-8c00-aa6b946b1d6a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_567bfdaf-7a71-0a8c-e33e-b9f7b4096843" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a859bb84-8118-88ec-5136-83fdb14e8f32" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_567bfdaf-7a71-0a8c-e33e-b9f7b4096843" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_86f5e36c-fcf4-c608-9d6c-02f589962cdc" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_6d3ec995-5062-ef92-dd72-b570c1eafdc8" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_86f5e36c-fcf4-c608-9d6c-02f589962cdc" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_898d9dde-51c0-10b5-4600-dc6b12c399c4" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_86f5e36c-fcf4-c608-9d6c-02f589962cdc" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_898d9dde-51c0-10b5-4600-dc6b12c399c4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="loc_us-gaap_DeferredTaxLiabilities_f549ecdb-d466-ac37-840e-8410ff9e5017" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_86f5e36c-fcf4-c608-9d6c-02f589962cdc" xlink:to="loc_us-gaap_DeferredTaxLiabilities_f549ecdb-d466-ac37-840e-8410ff9e5017" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_b65887e3-1865-ef3e-c8ae-81780cbff9ee" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_86f5e36c-fcf4-c608-9d6c-02f589962cdc" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_b65887e3-1865-ef3e-c8ae-81780cbff9ee" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_49d65a66-0444-b198-9d28-5c0811b1bdf3" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_04e17fb3-9b77-1c98-f460-7f5dd0c01008" xlink:to="loc_us-gaap_CommitmentsAndContingencies_49d65a66-0444-b198-9d28-5c0811b1bdf3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_2644da13-7baa-0a2f-63e0-0906a691ba01" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_04e17fb3-9b77-1c98-f460-7f5dd0c01008" xlink:to="loc_us-gaap_StockholdersEquity_2644da13-7baa-0a2f-63e0-0906a691ba01" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_3c8f3df4-466c-f78c-b021-17337fc4a147" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_2644da13-7baa-0a2f-63e0-0906a691ba01" xlink:to="loc_us-gaap_PreferredStockValue_3c8f3df4-466c-f78c-b021-17337fc4a147" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_d53388e7-4c8c-4e6d-6e90-7a6e0a100b74" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_2644da13-7baa-0a2f-63e0-0906a691ba01" xlink:to="loc_us-gaap_CommonStockValue_d53388e7-4c8c-4e6d-6e90-7a6e0a100b74" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaap_AdditionalPaidInCapital_27e98f68-fe6c-3420-5b5a-861a4dc60800" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_2644da13-7baa-0a2f-63e0-0906a691ba01" xlink:to="loc_us-gaap_AdditionalPaidInCapital_27e98f68-fe6c-3420-5b5a-861a4dc60800" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_f759e73e-9f4f-941e-1138-49bc44f6b118" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_2644da13-7baa-0a2f-63e0-0906a691ba01" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_f759e73e-9f4f-941e-1138-49bc44f6b118" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_aeb1020a-508a-a8c1-f34c-bafff16c26cb" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_2644da13-7baa-0a2f-63e0-0906a691ba01" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_aeb1020a-508a-a8c1-f34c-bafff16c26cb" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_104af714-3829-5d79-3fb3-059f86c366da" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_104af714-3829-5d79-3fb3-059f86c366da" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_8baf87d5-5f2f-7d0d-cb85-b9f249bae0c5" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_NetIncomeLoss_8baf87d5-5f2f-7d0d-cb85-b9f249bae0c5" xlink:type="arc" />
    <link:loc xlink:href="vec-20160930.xsd#vec_DepreciationDepletionandAmortizationExcludingAmortizationofFinancingCosts" xlink:label="loc_vec_DepreciationDepletionandAmortizationExcludingAmortizationofFinancingCosts_ded67db8-70d1-1a8a-ba05-9d0f117df4aa" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_vec_DepreciationDepletionandAmortizationExcludingAmortizationofFinancingCosts_ded67db8-70d1-1a8a-ba05-9d0f117df4aa" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_4f25f358-0eb6-8948-fd67-cb4acfcd66ec" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_4f25f358-0eb6-8948-fd67-cb4acfcd66ec" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_432488d8-28ca-5b8d-679b-29be120957b5" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_ShareBasedCompensation_432488d8-28ca-5b8d-679b-29be120957b5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_9a24f45c-1e95-3649-7f52-85ed3c472b12" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_9a24f45c-1e95-3649-7f52-85ed3c472b12" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInReceivables_49b75b63-2bef-54bd-9bf8-3a0ce9af35f3" xlink:type="locator" />
    <link:calculationArc order="6" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_IncreaseDecreaseInReceivables_49b75b63-2bef-54bd-9bf8-3a0ce9af35f3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_d8c0a214-0b0d-1fc8-686b-ed5eca49895f" xlink:type="locator" />
    <link:calculationArc order="7" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_d8c0a214-0b0d-1fc8-686b-ed5eca49895f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_503015f3-ea26-0d7a-c655-6d6aff0c5fab" xlink:type="locator" />
    <link:calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_503015f3-ea26-0d7a-c655-6d6aff0c5fab" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings" xlink:label="loc_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_614af2a6-10f7-c547-f84e-1f55023ce538" xlink:type="locator" />
    <link:calculationArc order="9" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_614af2a6-10f7-c547-f84e-1f55023ce538" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_b5367bf2-397c-4180-7e1e-54dd40b7f0d0" xlink:type="locator" />
    <link:calculationArc order="10" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_b5367bf2-397c-4180-7e1e-54dd40b7f0d0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_04170815-b2b6-fb8f-5ca6-e1c62554f777" xlink:type="locator" />
    <link:calculationArc order="11" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_04170815-b2b6-fb8f-5ca6-e1c62554f777" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_7a016eeb-d472-4272-2fad-97e749a6fbc2" xlink:type="locator" />
    <link:calculationArc order="12" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_975a3fab-7f49-5162-2cb5-31bb1479931f" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_7a016eeb-d472-4272-2fad-97e749a6fbc2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_95f67350-d3ec-5d41-e3b2-a4fe7a19e15b" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_104af714-3829-5d79-3fb3-059f86c366da" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_95f67350-d3ec-5d41-e3b2-a4fe7a19e15b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_4bfb598c-5b20-1fea-5801-a6da79e5a964" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_95f67350-d3ec-5d41-e3b2-a4fe7a19e15b" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_4bfb598c-5b20-1fea-5801-a6da79e5a964" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_da5d3613-0426-0efc-e877-f02868c1f6ef" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_95f67350-d3ec-5d41-e3b2-a4fe7a19e15b" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_da5d3613-0426-0efc-e877-f02868c1f6ef" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital" xlink:label="loc_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_ed3866ed-d229-5b3e-0e77-49a1d2bbce3a" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_95f67350-d3ec-5d41-e3b2-a4fe7a19e15b" xlink:to="loc_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_ed3866ed-d229-5b3e-0e77-49a1d2bbce3a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_104af714-3829-5d79-3fb3-059f86c366da" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RepaymentsOfSecuredDebt" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_8f89de87-b2e7-9565-1475-be70e859771e" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:to="loc_us-gaap_RepaymentsOfSecuredDebt_8f89de87-b2e7-9565-1475-be70e859771e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_6e85ad2d-b653-fa97-9d71-43000ea262f7" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_6e85ad2d-b653-fa97-9d71-43000ea262f7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RepaymentsOfLinesOfCredit" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_8f026380-9a35-4792-a857-972fb13c5447" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_8f026380-9a35-4792-a857-972fb13c5447" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_53bb4e1b-52b6-1bb1-1672-d14ea634a154" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_53bb4e1b-52b6-1bb1-1672-d14ea634a154" xlink:type="arc" />
    <link:loc xlink:href="vec-20160930.xsd#vec_ProceedsfromInsuranceFinancing" xlink:label="loc_vec_ProceedsfromInsuranceFinancing_05bfe788-7f72-d59d-3848-9d0f1182bad0" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:to="loc_vec_ProceedsfromInsuranceFinancing_05bfe788-7f72-d59d-3848-9d0f1182bad0" xlink:type="arc" />
    <link:loc xlink:href="vec-20160930.xsd#vec_RepaymentsofInsuranceFinancing" xlink:label="loc_vec_RepaymentsofInsuranceFinancing_308D75594A1B97DFEA6CDA7CC74CB9C0" xlink:type="locator" />
    <link:calculationArc order="6" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:to="loc_vec_RepaymentsofInsuranceFinancing_308D75594A1B97DFEA6CDA7CC74CB9C0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_11ed54de-8651-64ce-6bd2-47983535a6d4" xlink:type="locator" />
    <link:calculationArc order="7" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_11ed54de-8651-64ce-6bd2-47983535a6d4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_21041b8b-cf55-3af3-04a5-97303c43edf7" xlink:type="locator" />
    <link:calculationArc order="8" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_08614f0c-c3a2-4c92-7c1d-aed5de18fe70" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_21041b8b-cf55-3af3-04a5-97303c43edf7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_9f72449f-62f6-71b1-0128-c7088f4f3527" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_104af714-3829-5d79-3fb3-059f86c366da" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_9f72449f-62f6-71b1-0128-c7088f4f3527" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_663a641c-b103-1e10-d3ec-c078ec7a031b" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_8baf87d5-5f2f-7d0d-cb85-b9f249bae0c5" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_663a641c-b103-1e10-d3ec-c078ec7a031b" xlink:to="loc_us-gaap_NetIncomeLoss_8baf87d5-5f2f-7d0d-cb85-b9f249bae0c5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_fc027bcf-19a3-7936-be65-3ec1deb94fb4" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_663a641c-b103-1e10-d3ec-c078ec7a031b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_fc027bcf-19a3-7936-be65-3ec1deb94fb4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent_8d005ce4-fe30-a28c-a1d2-56db999cf821" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_fc027bcf-19a3-7936-be65-3ec1deb94fb4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent_8d005ce4-fe30-a28c-a1d2-56db999cf821" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_993cb7f4-08a4-ae0c-2079-6e424203bfd0" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent_8d005ce4-fe30-a28c-a1d2-56db999cf821" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_993cb7f4-08a4-ae0c-2079-6e424203bfd0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax_4afe630a-58d8-30a4-8e83-67bd4aa54fe1" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent_8d005ce4-fe30-a28c-a1d2-56db999cf821" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax_4afe630a-58d8-30a4-8e83-67bd4aa54fe1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent_2a0160ba-4ca8-c6d8-1572-bc37c5bd9f36" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent_8d005ce4-fe30-a28c-a1d2-56db999cf821" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent_2a0160ba-4ca8-c6d8-1572-bc37c5bd9f36" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_5c0eef35-65f3-1f95-6efc-88d329d3a633" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_fc027bcf-19a3-7936-be65-3ec1deb94fb4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_5c0eef35-65f3-1f95-6efc-88d329d3a633" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/CondensedConsolidatedStatementsOfIncomeUnaudited" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_8baf87d5-5f2f-7d0d-cb85-b9f249bae0c5" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5ba85eae-c4c2-72cc-f9e5-b0edc41783e5" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_8baf87d5-5f2f-7d0d-cb85-b9f249bae0c5" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5ba85eae-c4c2-72cc-f9e5-b0edc41783e5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_800dbb3e-0416-e0ab-a30e-cfaeb17b8c4c" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5ba85eae-c4c2-72cc-f9e5-b0edc41783e5" xlink:to="loc_us-gaap_OperatingIncomeLoss_800dbb3e-0416-e0ab-a30e-cfaeb17b8c4c" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ContractsRevenue" xlink:label="loc_us-gaap_ContractsRevenue_bf983ae9-4445-9fb2-ffa8-09746c4cbffd" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_800dbb3e-0416-e0ab-a30e-cfaeb17b8c4c" xlink:to="loc_us-gaap_ContractsRevenue_bf983ae9-4445-9fb2-ffa8-09746c4cbffd" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ContractRevenueCost" xlink:label="loc_us-gaap_ContractRevenueCost_cfafcc55-c1b4-cbaf-d0e3-35d31ffb8b3e" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_800dbb3e-0416-e0ab-a30e-cfaeb17b8c4c" xlink:to="loc_us-gaap_ContractRevenueCost_cfafcc55-c1b4-cbaf-d0e3-35d31ffb8b3e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_33158828-aa18-5ead-beab-c284c08cb606" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_800dbb3e-0416-e0ab-a30e-cfaeb17b8c4c" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_33158828-aa18-5ead-beab-c284c08cb606" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_c3f75946-8339-c884-022f-1e599b08f0f5" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5ba85eae-c4c2-72cc-f9e5-b0edc41783e5" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_c3f75946-8339-c884-022f-1e599b08f0f5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_9b166675-b7b2-1067-1806-03b1ee0126f1" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_8baf87d5-5f2f-7d0d-cb85-b9f249bae0c5" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_9b166675-b7b2-1067-1806-03b1ee0126f1" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/Debt" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DebtAdditionalInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DebtScheduleOfCarryingValuesAndFairValuesOfTermFacilityDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DebtTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DerivativeInstruments" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DerivativeInstrumentsAdditionalInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DerivativeInstrumentsSummaryOfAmountAtFairValueAndLocationOfDerivativeInstrumentDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DerivativeInstrumentsTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPolicies" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesSummaryOfCumulativeCatchUpAdjustmentsDetails" xlink:type="extended">
    <link:loc xlink:href="vec-20160930.xsd#vec_IncreaseDecreaseInOperatingIncomeDueToCumulativeCatchUpAdjustments" xlink:label="loc_vec_IncreaseDecreaseInOperatingIncomeDueToCumulativeCatchUpAdjustments_c4ae846d-5f9a-b548-ca0f-9d0f1187441e" xlink:type="locator" />
    <link:loc xlink:href="vec-20160930.xsd#vec_IncreaseinOperatingIncomeDuetoCumulativeCatchupAdjustments" xlink:label="loc_vec_IncreaseinOperatingIncomeDuetoCumulativeCatchupAdjustments_18c97847-8469-3f32-538e-9d0f117b3026" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_vec_IncreaseDecreaseInOperatingIncomeDueToCumulativeCatchUpAdjustments_c4ae846d-5f9a-b548-ca0f-9d0f1187441e" xlink:to="loc_vec_IncreaseinOperatingIncomeDuetoCumulativeCatchupAdjustments_18c97847-8469-3f32-538e-9d0f117b3026" xlink:type="arc" />
    <link:loc xlink:href="vec-20160930.xsd#vec_DecreaseinOperatingIncomeDuetoCumulativeCatchupAdjustments" xlink:label="loc_vec_DecreaseinOperatingIncomeDuetoCumulativeCatchupAdjustments_8abe8c71-db94-6728-28b2-9d0f118fd252" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_vec_IncreaseDecreaseInOperatingIncomeDueToCumulativeCatchUpAdjustments_c4ae846d-5f9a-b548-ca0f-9d0f1187441e" xlink:to="loc_vec_DecreaseinOperatingIncomeDuetoCumulativeCatchupAdjustments_8abe8c71-db94-6728-28b2-9d0f118fd252" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/DocumentAndEntityInformation" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/EarningsPerShare" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/EarningsPerShareReconciliationOfBasicAndDilutedWeightedAverageSharesOutstandingDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ae404dc0-76bc-cd1d-811f-e233c07e0569" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_9dba38ce-5067-b4c4-09f7-0cf74e4693de" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ae404dc0-76bc-cd1d-811f-e233c07e0569" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_9dba38ce-5067-b4c4-09f7-0cf74e4693de" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_e841a58a-f12e-0adc-36de-0299a43719a9" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ae404dc0-76bc-cd1d-811f-e233c07e0569" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_e841a58a-f12e-0adc-36de-0299a43719a9" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/EarningsPerShareTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/Goodwill" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/GoodwillDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/IncomeTaxes" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/IncomeTaxesAdditionalInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/PostEmploymentBenefitPlans" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/PostEmploymentBenefitPlansDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/Receivables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/ReceivablesAdditionalInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/ReceivablesScheduleOfReceivablesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_bbf813cd-8531-daad-0362-0abcbe609fb5" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_BilledContractReceivables" xlink:label="loc_us-gaap_BilledContractReceivables_71a86aed-ffb5-bcab-77c6-88b50f3a5902" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivablesNetCurrent_bbf813cd-8531-daad-0362-0abcbe609fb5" xlink:to="loc_us-gaap_BilledContractReceivables_71a86aed-ffb5-bcab-77c6-88b50f3a5902" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_UnbilledContractsReceivable" xlink:label="loc_us-gaap_UnbilledContractsReceivable_2b71f5b0-d016-5d4c-e76d-103261cdc8b8" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivablesNetCurrent_bbf813cd-8531-daad-0362-0abcbe609fb5" xlink:to="loc_us-gaap_UnbilledContractsReceivable_2b71f5b0-d016-5d4c-e76d-103261cdc8b8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherReceivablesNetCurrent" xlink:label="loc_us-gaap_OtherReceivablesNetCurrent_29eaa415-9c3c-12f4-00cb-2efd1291b886" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivablesNetCurrent_bbf813cd-8531-daad-0362-0abcbe609fb5" xlink:to="loc_us-gaap_OtherReceivablesNetCurrent_29eaa415-9c3c-12f4-00cb-2efd1291b886" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/ReceivablesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/RecentAccountingPronouncements" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/RecentAccountingPronouncementsTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/StockBasedCompensation" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/StockBasedCompensationAdditionalInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/StockBasedCompensationScheduleOfAssumptionsUtilizedDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/StockBasedCompensationScheduleOfImpactOfStockBasedCompensationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/StockBasedCompensationScheduleOfNonQualifiedStockOptionsAndRestrictedStockUnitsActivityDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/StockBasedCompensationTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/SubsequentEvents" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.vectrusinc.com/role/SubsequentEventsDetails" xlink:type="extended" />
</link:linkbase>
