U.S. Air Force Airman 1st Class Michael Griffin, 1st Maintenance Squadron nondestructive inspection technician, utilizes a stationary penetrant to inspect an aircraft part at Langley Air Force Base, Va., Nov. 3, 2014. NDI technicians use numerous techniques including X-ray systems and to locate debris that, if left undiscovered, could lead to disastrous consequences impacting Airmen, equipment and aircraft. (U.S. Air Force photo by Staff Sgt. Antoinette Gibson/Released)