Timken Gears & Services Inc., King of Prussia, Pennsylvania, is awarded a $78,492,998 firm-fixed-price modification to previously awarded contract N0002416C4202 to exercise options for two fiscal 2022 main reduction gear shipsets to support DDG-51 Class Hulls 138 and 139. Work will be performed in Santa Fe Springs, California (77%); Riverside, Missouri (10%); Latrobe, Pennsylvania (3%); Fitchburg, Massachusetts (3%); Erie, Pennsylvania (3%); New Castle, Delaware (2%); Milwaukee, Wisconsin (1%); St. Augustine, Florida (1%), and is expected to be completed by November 2025. Fiscal 2022 shipbuilding and conversion (Navy) funds in the amount of $78,492,998 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.