Lockheed Martin Rotary and Mission Systems, Manassas, Virginia, is awarded a $26,455,040 cost-plus-incentive fee, firm-fixed-priced, fixed-price incentive, and cost-only modification to previously awarded contract (N0002418C5218) to exercise an option and provide funding for engineering labor in support of continued AN/SQQ-89A(V)15 surface ship undersea warfare combat system development, integration, manufacture, production, and testing, and for procurement of Multi-Function Towed Array TB-37A modkit components. This contract combines purchases for the U.S. government (92%); and the government of Australia (8%) under the Foreign Military Sales programs. This modification also increases the option amounts for engineering labor and Technical Insertion-22 hardware and shore site systems. If exercised, the options would increase the cumulative value of the contract by $253,892,830. Work will be performed in Manassas, Virginia (79%), Lemont Furnace, Pennsylvania (14%), Syracuse, New York (6%), and Hauppauge, New York (1%) and is expected to be completed by March 2023. If all options are exercised, work will continue through March 2026. Fiscal 2022 shipbuilding and conversion (Navy) funds in the amount of $7,997,476 (79%); foreign military sales (Australia) funds in the amount of $800,000 (8%); fiscal 2018 shipbuilding and conversion (Navy) funds in the amount of $456,424 (4%); fiscal 2021 other procurement (Navy) funds in the amount of $260,856 (3%); fiscal 2016 shipbuilding and conversion (Navy) funds in the amount of $140,958 (1%); fiscal 2019 shipbuilding and conversion (Navy) funds in the amount of $140,079 (1%); fiscal 2017 shipbuilding and conversion (Navy) funds in the amount of $137,448 (1%); fiscal 2015 shipbuilding and conversion (Navy) funds in the amount of $80,282 (1%); fiscal 2020 shipbuilding and conversion (Navy) funds in the amount of $59,896 (1%); fiscal 2021 research, development, test, and evaluation (Navy) funds in the amount of $10,798 (1%) will be obligated at time of award and funds in the amount of $10,798 will expire at the end of the current fiscal year. The Naval Sea Systems Command, Washington, District of Columbia, is the contracting activity.