DZSP 21 LLC, Marlton, New Jersey, is awarded $89,096,216 for a cost-plus-award-fee modification to previously awarded contract N40192-23-C-5300. This modification provides for the exercise of Option Period Three for base operating support services at Joint Region Marianas. Work will be performed at various Navy, Marine Corps, and Air Force installations in Guam. The period of performance is from August 2023 to July 2024. This award brings the total cumulative value of the contract to $662,483,464. Fiscal 2023 operation and maintenance (Navy) (O&M, N); fiscal 2023 O&M (Marine Corps); fiscal 2023 O&M (Defense); fiscal 2023 O&M (Army National Guard); fiscal 2023 medical facilities; and fiscal 2023 family housing O&M, N funds in the amount of $42,525,597 will be obligated at time of award, and funds will expire at the end of the current fiscal year. The Naval Facilities Engineering Systems Command, Marianas, Guam, is the contracting activity.