Airman Kounann Gullam, 362nd Training Squadron crew chief apprentice course student, inspects the right main landing gear of an F-16 at Sheppard Air Force Base, Texas, April 10, 2019. It’s a crew chief’s duty to ensure that every component of the aircraft is maintained to the most exacting standards. Gullam, an Oregon native, said he joined the Air Force to learn a new skill and better himself. (U.S. Air Force photo by Airman 1st Class Madeleine E. Remillard)