(From the Squadron supplier): The 621st Air Control Squadron (ACS) is the airspace management agency assigned to the 607th Air Operations Center, 7th Air Force, Osan Air Base, Republic of Korea. It is the only permanently forward-deployed air control squadron in the world responsible for providing air control (radar) services for combat air operations. The 621 ACS achieves command and control of joint air operations by conducting surveillance identification, weapons control, Battle Management and theater communications data link. This is the black background patch created to commemorate the ‘AIR POWER DAY 2025″ airshow at OSAN AB and does not come with velcro attached.
