Northrop Grumman Corp., Space Systems Sector, Dulles, Virginia, has been awarded a $22,145,129 cost-plus-fixed-fee undefinitized contract for the Rapid On-orbit Space Technology Evaluation Ring (ROOSTER) effort. This contract provides for the delivery of a ROOSTER space vehicle, a multi-manifest rideshare satellite supporting operational and prototype missions in a geostationary orbit and maturing technology needed to conduct on-orbit refueling for future missions. Work will be performed in Dulles, Virginia, and is expected to be completed by Feb. 28, 2026. This award is the result of a sole-source acquisition. Fiscal 2022 Space Force research, development, test and evaluation funds in the amount of $4,200,000 are being obligated at the time of award. U.S. Space Force, Space Systems Command, El Segundo, California, is the contracting activity (FA8814-22-C-0004).