U.S. Air Force Airman 1st Class Joshua Tears-Knapp, 23d Equipment Maintenance Squadron aircraft metals technology journeyman, uses a plasma cutter to weld a piece of metal, March 18, 2016, at Moody Air Force Base, Ga. Metals technology technicians are responsible for fabricating and repairing aircraft parts and equipment. (U.S. Air Force photo by Airman 1st Class Greg Nash/Released)