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Senior Airman Tony Guinn, 2nd Maintenance Squadron aircraft metals technology journeyman, grinds a tungsten inert gas, or TIG, welder tip prior to his welding certification on Barksdale Air Force Base, La., March. 25, 2014. The certification requires two pieces of aluminum to be mounted on a fixture at 45 degrees and cannot be repositioned once mounted. (U.S. Air Force photo/Staff Sgt. Jason McCasland)


Let the sparks fly: 2nd MXS welder certification

Senior Airman Tony Guinn, 2nd Maintenance Squadron aircraft metals technology journeyman, grinds a tungsten inert gas, or TIG, welder tip prior to his welding certification on Barksdale Air Force Base, La., March. 25, 2014. The certification requires two pieces of aluminum to be mounted on a fixture at 45 degrees and cannot be repositioned once mounted. (U.S. Air Force photo/Staff Sgt. Jason McCasland)

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