NDI Airmen find defects invisible to the naked eye
Senior Airman Sherry Phillips, 2nd Maintenance Squadron non-destructive inspection journeyman, conducts a fluorescent magnetic particle inspection on a piece of equipment on Barksdale Air Force Base, La., Sept. 19, 2013. A variety of parts come into NDI, from aircraft parts to standard vehicle components. The particles fill in any cracks, making it easier to determine if the part is serviceable. (U.S. Air Force photo/Senior Airman Benjamin Gonsier)