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aircrafts metals technology instructor


Master Sgt. James Mattingly, sitting, 361st Training Squadron aircrafts metals technology instructor, performs a demonstration for his students at Sheppard Air Force Base, Texas, Sept. 5, 2018. Mattingly is demonstrating a Tungsten Inert Gas Welding, by heating up a thin piece of Tungsten which Mattingly uses to write/weld patterns onto the pieces of metal. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)

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