Fluor Marine Propulsion LLC, Arlington, Virginia, is awarded a $1,163,470,003 cost-plus-fixed-fee modification to previously awarded contract N00024-18-C-2130 to exercise the fiscal 2022 option for naval nuclear propulsion work at the Naval Nuclear Laboratory. Work will be performed in Schenectady, New York (47%); Pittsburgh, Pennsylvania (44%); and Idaho Falls, Idaho (9%). Fiscal 2021 operation and maintenance (Navy) funds in the amount of $11,715,150 (68%); fiscal 2019 other procurement (Navy) funds in the amount of $2,839,984 (16%); fiscal 2021 shipbuilding and conversion (Navy) funds in the amount of $2,663,000 (15%); and fiscal 2020 research, development, test and evaluation (Navy) funds in the amount of $101,058 (1%) will be obligated at time of award, of which, funds in the amount of $11,715,150 will expire at the end of the current fiscal year. This contract modification was not competitively procured. The Naval Sea Systems Command, Washington, D.C., is the contracting activity.