U.S. Air Force Staff Sgt. Seth Webb, 7th Component Maintenance Squadron aerospace propulsion specialist, adds safety wires to an F101 engine June 6, 2016, at Dyess Air Force Base, Texas. Safety wiring is an added line of defense in securing bolts on an aircraft. The wires help reduce the risk of bolts becoming loose or falling out due to the vibrations made by the aircraft. (U.S. Air Force photo by Airman 1st Class Quay Drawdy/Released)