Bechtel Plant Machinery Inc., Monroeville, Pennsylvania, is awarded a $507,423,423 cost-plus-fixed-fee modification to previously-awarded contract N00024-16-C-2106 for naval nuclear propulsion components. Work will be performed in Monroeville, Pennsylvania (71%); and Schenectady, New York (29%). Fiscal 2022 shipbuilding and conversion (Navy) funds in the amount of $507,423,423 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.