Prism Maritime LLC,* Chesapeake, Virginia, is awarded a $25,500,420 cost-plus-fixed-fee contract for alteration installation team and in-service engineering agent support services. Services include installation, modification and upgrade for various systems including the Tomahawk weapons system, the naval fire control system, the Mk 160-gun computer system, the Mk 20 electro-optical sensor system, the Harpoon weapon system, the Over the Horizon weapons system, the Total Ship Computing Environment, Littoral Combat Ship (LCS) command and control networks, the Dorna, the Mk 57 fire control system, host-based security systems, and the LCS Gun Fire Control System. This contract includes options which, if exercised, would bring the cumulative value of this contract to $218,420,038. Work will be performed in San Diego, California (30%); Norfolk, Virginia (30%); Mayport, Florida (10%); Pearl Harbor, Hawaii (10%); Portland, Oregon (10%); and Yokosuka, Japan (10%), and is expected to be completed by February 2026. If all options are exercised, work will continue through February 2030. Fiscal 2025 other procurement (Navy) funds in the amount of $20,000 will be obligated at time of award and does not expire at the end of the current fiscal year. This contract was competitively procured via the System for Award Management website, with four offers received. The Navy Surface Warfare Center, Port Hueneme Division, Port Hueneme, California, is the contracting activity (N6339425C0002).