More than meets the eye
U.S. Air Force Airman 1st Class Brandon Long, a 354th Maintenance Squadron non-destructive inspection (NDI) apprentice, views an x-ray film of an F-16 torque tube Nov. 8, 2017, at Eielson Air Force Base, Alaska. NDI specialists are trained to use various methods to detect cracks, voids, or flaws on aircraft and supporting equipment. (U.S. Air Force photo by Senior Airman Cassie Whitman)