The Department of Defense, through the Naval Sea Systems Command (NAVSEA HQ), is issuing a competitive solicitation for the AEGIS Ship Integration & Test (SI&T) Combat System under solicitation number N00024-25-R-5341. This procurement aims to secure engineering and technical services for the continued development, integration, and deployment of AEGIS-based combat systems on U.S. Navy surface combatants and international tactical sites. The resulting contract will be a Cost Plus Fixed Fee (CPFF) arrangement, with potential for an additional award fee, and all work must comply with applicable laws and regulations. Interested offerors should direct inquiries to Jocelyn Varela-Martinez at jocelyn.i.varela-martinez.civ@us.navy.mil or Robert Larkin at robert.j.larkin25.civ@us.navy.mil, with no funding currently associated with this announcement and no commitment implied. Proposals must adhere to the requirements outlined in the solicitation and its attachments, with deadlines for questions specified in the RFP.