A piece of the bulkhead of an F-16 Fighting Falcon aircraft from the 140th Wing Colorado Air National Guard is inspected Sept. 12, 2019, at Buckley Air Force Base in Aurora, Colorado. The 446 bulkhead is the aft fuselage structure of the F-16 that supports the tail structure and recent tests have indicated an increased amount of stress cracks in this area. (U.S. Air National Guard photo by Senior Master Sgt. John Rohrer)

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Photo by: Senion Master Sgt. John Rohrer |  VIRIN: 190912-Z-QD622-1030.JPG