Senior Airman Violette Zeimet, 366th Equipment Maintenance Squadron non-destructive inspections journeyman, poses for a photo in front of one of the machines, Jan. 15, 2016, at Mountain Home Air Force Base, Idaho. With different types of materials coming into the shop, NDI personnel must determine what test method to use and prepare fluids and parts for inspection.(U.S. Air Force photo by Senior Airman Jeremy L. Mosier/Released)

Staff Sgt. Matthew Barnes, 366th Equipment Maintenance Squadron non-destructive inspections craftsman, performs a fluorescent penetrate inspection on a bracket from a F-15E Strike Eagle, Jan. 15, 2016 at Mountain Home Air Force Base, Idaho. This inspection is used on aluminum parts or those that are non-magnetic.(U.S. Air Force photo by Senior Airman Jeremy L. Mosier/Released)

Senior Airman Violette Zeimet, 366th Equipment Maintenance Squadron non-destructive inspections journeyman, performs a magnetic particle inspection on a jet fuel starter piston at Mountain Home Air Force Base, Idaho, Jan. 15, 2016. This form of inspection is intended for magnetic materials and looks for surface and subsurface cracks.(U.S. Air Force photo by Senior Airman Jeremy L. Mosier/Released)

Senior Airman Violette Zeimet, 366th Equipment Maintenance Squadron non-destructive inspections journeyman, performs an oil analysis on the engine oil of an F-15E Strike Eagle, Jan. 15, 2016 at Mountain Home Air Force Base. This form of testing is used to catch any abnormal trends that could prevent catastrophic engine failure.(U.S. Air Force photo by Senior Airman Jeremy L. Mosier/Released)

Staff Sgt. Matthew Barnes, 366th Equipment Maintenance Squadron non-destructive inspections craftsman, explains what he's looking for in the x-ray to Senior Airman Violette Zeimet, 366th EMS NDI journeyman, Jan. 15, 2016, at Mountain Home Air Force Base, Idaho. NDI uses radiographic inspection to find cracks or defects deep within various parts of the aircraft.(U.S. Air Force photo by Senior Airman Jeremy L. Mosier/Released)

From left to right: Staff Sgt. Matthew Barnes, 366th Equipment Maintenance Squadron non-destructive inspections craftsman, Senior Airman Violette Zeimet, 366th EMS NDI journeyman, and Senior Airman Phillip Young, 366th EMS NDI journeyman, pose for a photo in front of their occupational crest Jan. 15, 2016, at Mountain Home Air Force Base, Idaho. NDI personnel must be proficient in identifying metals, metals' flaws and have a strong understanding of radiological safety.(U.S. Air Force photo by Senior Airman Jeremy L. Mosier/Released)