Air Force Staff Sgt. Domonic Rawls, 20th Equipment Maintenance Squadron nondestructive inspection craftsman, performs a daily calibration on a spectroil unit at Shaw Air Force Base, , April 11, 2017. Nondestructive inspection Airmen use the unit to ensure the correct elemental composition of the F-16CM Fighting Falcon’s engine oil.

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Size: 1731px × 1155px
Photo credit: © PR Collection / Alamy / Afripics
License: Licensed
Model Released: No

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