Senior Airman Peter Lockett, 20th Equipment Maintenance Squadron (EMS) aircraft metals technology journeyman, cuts threads onto an F-16 Viper engine coolant injector at Shaw Air Force Base, South Carolina, Feb. 11, 2021. The 20th EMS aircraft metals technology flight creates their own F-16 parts and equipment to reduce maintenance time and increase readiness. (U.S. Air Force photo by Staff. Sgt. Benjamin Ingold)