NDI inspects for defects invisible to naked eye
Senior Airman Whitnie Hendricks, 51st Maintenance Squadron nondestructive inspection journeyman, prepares to administer a magnetic particle inspection on a bolt from an F-16 Fighting Falcon at the NDI lab at Osan Air Base, Republic of Korea, Aug. 13, 2013. Using eddy current, magnetic particle, radiographic and ultrasonic test equipment, along with liquid penetrant and X-ray, the team can look for small cracks and defects in aircraft and weapons systems components that are invisible to the naked eye. (U.S. Air Force photo/Senior Airman Siuta B. Ika)