Staff Sgt. Casey Durham uses a cornace break to fabricate an extrusion at Fairchild Air Force Base, Washington, Aug. 20, 2014. The cornace break bends the metal to 90 degrees to increase structural integrity of the piece. Durham is an aircraft structural craftsman from the 92nd Maintenance Squadron. (U.S. Air Force photo by Staff Sgt. Samantha Krolikowski/Released)
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