Col. James Brock, 442d Fighter Wing Maintenance Group commander, passes the guidon to Maj. James Chevalier, incoming 442d Aircraft Maintenance Squadron commander, during an assumption of command ceremony at Whiteman Air Force Base, Mo., July 8, 2017. Chevalier's previous assignment was the Implementation Branch Chief, Repair Network Integration Division, Headquarters Air Force Material Command, Wright-Patterson AFB, Oh. (U.S. Air Force photo by Senior Airman Missy Sterling)