Staff Sgt. Alexander Shaikh, 60th Maintenance Squadron non-destructive inspections technician, runs a magnetic particle concentration test, Nov. 5, 2019, at Travis Air Force Base, Calif. When magnetized, the solution will show the NDI Airmen if there are any cracks in the tested item. (U.S. Air Force photo by Nicholas Pilch)

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Photo by: Nicholas Pilch |  VIRIN: 191105-F-UO290-9096.JPG