Air Force Photos

Fluorescent magnetic particle bath flows over a nose landing gear wheel bolt during an inspection, July 31, 2013, Ramstein Air Base, Germany. The fluorescent color comes from suspended iron particles which glow while under a black light. These iron particles are attracted to leakage fields caused by cracks in ferrous materials after being magnetized. (U.S. Air Force photo/Senior Airman Chris Willis)

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Photo by: Senior Airman Chris Willis |  VIRIN: 130731-F-LR266-132.JPG