Airmen assigned to the 25th Aircraft Maintenance Unit (AMU), Osan Air Base (OAB), South Korea, prepare an A-10 Thunderbolt II for a routine training mission at Andersen Air Force Base, Guam, Aug. 17, 2020. The 25th AMU and the 25th Fighter Squadron, OAB, deployed to Andersen to conduct routine flight training, wingman tactics familiarization and air refueling. (U.S. Air Force photo by Senior Airman Michael S. Murphy)