Bringing fabrication to the fight
U.S. Air Force Senior Airman Robert Mason, 354th Maintenance Squadron metals technology journeyman, makes adjustments to a water jet while fabricating fuel caps for F-16 Fighting Falcons at Eielson Air Force Base, Alaska, July 22, 2013. Metals tech Airmen are certified to run the machine, which pierces metal with 55,000 pounds per square inch using water and an abrasive mixture. (U.S. Air Force Senior Airman Shawn Nickel/Released)