General Dynamics Mission Systems, Fairfax, Virginia, is awarded a $9,999,990 cost-plus-fixed fee modification to previously awarded contract N00024-19-C-6407 to exercise options for engineering services in support of AN/BYG-1 Tactical Control System design, integration and testing. Work will be performed in Fairfax, Virginia, and is expected to be completed by July 2023. Fiscal 2022 shipbuilding and conversion (Navy) funds in the amount of $5,129,964 will be obligated at time of award and will not expire at the end of the current fiscal year. The Naval Sea Systems Command, Washington, D.C., is the contracting activity.