Centerra Group LLC, Herndon, Virginia, is awarded an $8,661,495 indefinite-delivery/indefinite-quantity modification to previously awarded contract N62742-16-D-3600. This modification provides for the exercise of Option 6 for base operating support services at military and civilian installations in the Republic of Singapore. This award brings the total cumulative face value of the contract to $68,575,430. Work will be performed in the Republic of Singapore. This option period is from April 2022 to March 2023. Fiscal 2022 operation and maintenance (Navy); fiscal 2022 operation and maintenance (Air Force); and fiscal 2022 non-appropriated funds in the amount of $7,964,813 for recurring work will be obligated at time of award on an individual task order, and funds will expire at the end of the current fiscal year. The Naval Facilities Engineering Systems Command Pacific, Pearl Harbor, Hawaii, is the contracting activity.