Dedicated crew chiefs assigned to the 57th Wing recite their professional oath during a dedication ceremony at Nellis Air Force Base, Nev., May 19, 2017. Each DCC is assigned an aircraft that they are responsible for maintaining. A dedicated crew chief’s technical knowledge is second-to-none and is heavily relied upon to ensure their aircraft’s mission success. (U.S. Air Force photo by Airman 1st Class Andrew D. Sarver/Released)