U.S. Air Force Tech. Sgt. Clint Ashley, 552nd Aircraft Maintenance Squadron crew chief, makes adjustments to a Boeing E-3 Sentry aircraft engine during an engine test at Ramstein Air Base, Germany, Sept. 24, 2020. Airmen assigned to the 552nd AMXS performed maintenance on the E-3 Sentry to make it operational for exercise Astral Knight 20. AK20 is a biennial integrated air and missile defense (IAMD) exercise focused on incrementally developing a theater wide joint IAMD architecture. (U.S. Air Force photo by Senior Airman Milton Hamilton)