U.S. Air Force Staff Sgt. John Routh, 23d Equipment Maintenance Squadron aircraft structural craftsman, repairs a structural beam in the cabin of an HH-60G Pave Hawk July 28, 2015, at Moody Air Force Base, Ga. Aircraft structural maintenance focuses on fixing structural components, fabricating parts and painting the aircraft. (U.S. Air Force photo by Airman 1st Class Kathleen D. Bryant/Released)