Lt. Col. Darrell Chase, outgoing 4th Aircraft Maintenance Squadron commander, speaks during the 4th AMXS reorganization ceremony at Seymour Johnson Air Force Base, North Carolina, Sept. 11, 2020. The 4 AMXS released its two Aircraft Maintenance Units, the 335th and 336th, to their respective fighter squadrons. (U.S. Air Force photo by Senior Airman Jacob Derry)