General Dynamics Electric Boat Corp., Groton, Connecticut, is awarded a $13,090,443 cost-plus-fixed-fee modification to a previously awarded contract (N00024-12-C-2115) for planning and execution of USS Vermont (SSN 792) post-delivery work period. Work will be performed in Groton, Connecticut, and is expected to be completed by May 2022. Fiscal 2021 shipbuilding and conversion (Navy) funds in the amount of $13,090,443 will be obligated at the time of award and will not expire at the end of the current fiscal year. This contract was not competitively procured. The statutory authority for this sole source award is in accordance with Defense Federal Acquisition Regulation 6.302-1(a)(2)(iii) — only one responsible source and no other supplies or services will satisfy agency requirements. The Supervisor of Shipbuilding Conversion and Repair, Groton, Connecticut, is the contracting activity.