Huntington Ingalls Inc., Newport News, Virginia, is awarded a $27,382,539 cost-plus-fixed-fee modification to previously awarded contract (N00024-21-C-2104) to exercise an option to support research and development of advanced submarine technologies for current and future submarine platforms. Work will primarily be performed in Newport News, Virginia and is expected to be completed by June 2025. Fiscal 2024 foreign partner funds in the amount of $2,950,000 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 and is a sole-source award pursuant to 10 U.S. Code 3204(a)(3) Industrial Mobilization. Naval Sea Systems Command, Washington, D.C., is the contracting activity.