U.S. Air Force Tech. Sgt. Robert Mackle, 325th Aircraft Maintenance Squadron dedicated crew chief, attaches a panel to an F-22 Raptor in Hangar 2 at Tyndall Air Force Base, Fla., March 20, 2017. Throughout the course of a day, dedicated crew chiefs like Mackle inspect and maintain the aircraft of the 95th Fighter Squadron prior to pilots’ takeoff for training. (U.S. Air Force photo by Senior Airman Solomon Cook/Released)