VSE Corp., Alexandria, Virginia, is awarded a $99,999,923 indefinite-delivery/indefinite-quantity, cost-plus-fixed-fee contract for Foreign Military Sales (FMS) supportability follow-on technical support (FOTS) to provide eligible foreign navies access to a broad range of life cycle support, systems upgrades, systems integration, and other related efforts associated with the transfer and acquisition, operation, and maintenance of naval vessels and systems within their inventory. The purpose of this gap-period contract is to provide continuation of mission critical support until the follow-on FMS FOTS contract solicited under N00024-18-R-4200 is awarded. This contract involves Foreign Military Sales to various foreign navies. No initial funding will be provided at contract award. Funding will be made at the delivery order level. Work is anticipated to be performed outside the continental U.S. (OCONUS) (80%); and within the continental U.S. (20%). Of the work performed OCONUS, countries include Iraq (25%), Egypt (25%), the Philippines (10%), and various other countries to be determined at the delivery order level (20%). Work is expected to be completed by March 2023. This contract was not competitively procured via the beta.sam.gov website. This sole-source award is justified pursuant to 10 U.S. Code 2304(c)(1), only one responsible source and no other supplies or services will satisfy agency requirements, and in accordance with Defense Federal Acquisition Regulation 6.302-1(a)(2)(iii)(B), requirements may be deemed to be available only from the original source in the case of follow-on contracts for the continued provision of highly specialized requirements when it is likely that award to any other source would result in unacceptable delays in fulfilling the agency’s requirements. The Naval Sea Systems Command, Washington, D.C., is the contracting activity (N00024-22-D-4205).