KBR Diego Garcia LLC, Houston, Texas, is awarded a $62,887,787 firm-fixed-price modification to exercise Option Four under previously-awarded indefinite-delivery/indefinite-quantity contract N62742-17-D-3600 for base operations support services at U.S. Navy Support Facility, Diego Garcia. Award of this option brings the total cumulative contract value to $325,356,510. Work will be performed in Diego Garcia, British Indian Ocean Territory, and is expected to be completed by November 2022. No funds will be obligated at time of award. Fiscal 2022 operation and maintenance funds (Navy and Air Force); and fiscal 2022 non-appropriated funds in the amount of $23,584,355 for recurring work will be obligated on individual task orders issued during the option period and will expire at the end of the current fiscal year. The Naval Facilities Engineering Systems Command Far East, Yokosuka, Japan, is the contracting activity.