Bechtel Plant Machinery Inc., Monroeville, Pennsylvania, is awarded a $621,969,749 cost-plus-fixed-fee modification to previously-awarded contract N00024-19-C-2115 for naval nuclear propulsion components. Work will be performed in Monroeville, Pennsylvania (77%); and Schenectady, New York (23%). Fiscal 2022 shipbuilding and conversion (Navy) funding in the amount of $498,923,330 (80%); and fiscal 2019 shipbuilding and conversion (Navy) funding in the amount of $123,046,419 (20%) 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.