Air Force Airman 1st Class Robert Rabe, 355th Equipment Maintenance Squadron non-destructive inspection journeyman, sprays a piece of metal with developer at the end of its penetrant process at Davis-Monthan Air Force Base, Ariz., Feb. 22, 2018. The developer makes it easier for the inspector to find defects within the metal.

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Photo credit: © RP Library / Alamy / Afripics
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Keywords: -, 355th, air, america, armed, army, defence, employee, federal, fighter, force, forces, government, military, navy, ndi, service, serviceman, servicemen, states, united, usa, wing