General Dynamics Mission Systems Inc., Manassas, Virginia, is awarded a $23,304,231 cost-plus-fixed-fee and cost contract modification to previously awarded contract N00024-24-C-6101 to exercise options for engineering design development and supporting travel for sonar systems. Work will be performed in Manassas, Virginia, and is expected to be completed by Sept. 30, 2025. Fiscal 2020 shipbuilding and conversion (Navy) funds in the amount of $231,609 (43%); fiscal 2024 shipbuilding and conversion (Navy) funds in the amount of $115,000 (22%); fiscal 2025 research, development, test and evaluation (Navy) in the amount of $110,000 (21%); and fiscal 2025 operation and maintenance (Navy) funds in the amount of $75,495 (14%), will be obligated at time of award and $75,495 will expire at the end of the current fiscal year. Naval Sea Systems Command, Washington, D.C., is the contracting activity.