L3Harris Technologies Inc., Colorado Springs, Colorado, has been awarded a $54,681,433 contract modification (P00225) to a previously awarded contract (FA8823-20-C-0004) for the Ground Bass Optical Sensor System modification for the Ground Based Electro-Optical Space Surveillance System. The modification brings the total cumulative face value of the contract to $740,237,085. Work will be performed at Colorado Springs, Colorado; White Sands Missile Range, New Mexico; Yoder, Colorado; and Maui, Hawaii, and is expected to be completed by Dec. 27, 2028. No funding is being obligated at time of award. The Space Systems Center Directorate of Contracting, Peterson Space Force Base, Colorado, is the contracting activity.