Staff Sgt. Walter Rueda-Perez, 31st Aircraft Maintenance Squadron dedicated crew chief, tightens a bolt on a fuel tank during swing shift, Aug. 24, 2016 at Aviano Air Base, Italy. Swing shift maintenance teams provide necessary repairs from electrical to mechanical inside and outside the aircraft to ensure mission readiness for the following day. (U.S. Air Force photo by Airman 1st Class Cary Smith/Released)