Serco Inc., Herndon, Virginia, has been awarded an $8,683,092, option modification (P00018) to previously awarded, firm-fixed-price contract FA2517-20-C-0003 for the exercise of Option Year Three from May 1, 2023, through April 30, 2024, to provide operations and maintenance support for the Ground-based Electro-optical Deep Space Surveillance System (GEODSS). Work will be performed in Socorro, New Mexico; Diego Garcia, British Indian Ocean Territory; and Maui, Hawaii, and is expected to be completed by Oct. 31, 2027, if all future option periods are exercised. Fiscal 2023 operations and maintenance funds in the amount of $8,683,092 are being obligated at time of award. Total cumulative face value of the contract is $30,631,810. The Space Acquisition and Integration Office, Peterson Space Force Base, Colorado, is the contracting activity.