Master Sgt. James Mattingly, welding, 361st Training Squadron aircrafts metals technology instructor, performs a demonstration for his class at Sheppard Air Force Base, Texas, Aug. 5, 2018. During their training Airmen only work on raw metals that won't be used other than to test their welding, but once at their first base they will create parts to be used in actual aircraft. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)

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Photo by: Airman 1st Class Pedro Tenorio |  VIRIN: 180905-F-YT646-2007.JPG