Col. Donn Yates, 4th Fighter Wing commander, left, speaks to members of the 334th Aircraft Maintenance Unit as part of a dedicated crew chief ceremony Jan. 11, 2019, at Seymour Johnson Air Force Base, North Carolina. A dedicated crew chief is someone assigned to a specific aircraft and is responsible for the maintenance performed on it. (U.S. Air Force photo by Airman 1st Class Jacob B. Derry)