Lt. Col. David Black, 442d Maintenance Group commander, left, and Maj. Bobby Cheek, 442d Aircraft Maintenance Squadron commander, stand at attention during an Assumption of Command ceremony at Whiteman Air Force Base, Mo., November 2, 2019. Cheek, the incoming AMXS commander, received his commission in May, 2004, from the Reserve Officer Training Corps at the University of Memphis. (U.S. Air Force photo by Staff Sgt. Missy Sterling)