Lockheed Martin Corp., Manassas, Virginia, is being awarded a cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity contract with a value of $18,308,576, and a five-year ordering period. This effort is for the continued software design agent for the existing Common Submarine Radio Room (CSRR) system and integrated Radio Communication System (iRCS). Also, to manage the software requirements database, control the CSRR and iRCS Control and Management (C&M) software baseline, provide platform- specific C&M software configurations, provide and prepare C&M software documentation, and implement software enhancements. Work will be performed in San Diego, California (70%); and Newport, Rhode Island (30%), with an expected completion date of September 2028. Fiscal 2023 research, development, test, and evaluation (Navy) funds in the amount of $206,482 will be obligated at the time of award. Contract funds will not expire at the end of the current fiscal year. Naval Information Warfare Systems Command, San Diego, California, is the contracting activity (N00039-23-D-4001).