The Department of Defense, through the Naval Sea Systems Command, intends to solicit a contract for strategic and attack mission support for various classes of nuclear-powered submarines, including the LOS ANGELES, SEAWOLF, and VIRGINIA Class SSNs, as well as OHIO Class SSBNs and SSGNs. The procurement will encompass a range of services such as engineering, technical support, design, configuration management, integrated logistics support, and modernization efforts, which are critical for maintaining the operational readiness and effectiveness of the U.S. submarine fleet. The solicitation, designated N00024-25-R-2119, will be issued on a sole source basis to Huntington Ingalls Incorporated, located in Newport News, Virginia, with interested subcontractors encouraged to reach out directly to the prime contractor. For further inquiries, interested parties may contact Kerry Payne at kerry.l.payne3.civ@us.navy.mil or Elizabeth Feliciano at elizabeth.feliciano-hernandez.civ@us.navy.mil, with responses to the notice accepted within 45 days of publication.