General Dynamics Electric Boat Corp., Groton, Connecticut, is awarded a not-to-exceed $39,779,145 undefinitized contract action modification to previously awarded contract N00024-20-C-2120 for lead yard support and development studies and design efforts related to Virginia class submarines. Work will be performed in the continental U.S. and is expected to be completed by June 2025. Fiscal 2023 research, development, test, and evaluation, Navy funds in the amount of $19,889,572 will be obligated at time of award and will not expire at the end of the current fiscal year. This contract was not competitively procured. The Naval Sea Systems Command, Washington, D.C., is the contracting activity.