Airman 1st Class Royston Bedminster, 28th Maintenance Squadron nondestructive inspection technician, inspects part of an actuator under black lights at Ellsworth Air Force Base, S.D., May 8, 2015. Under black light, imperfections appear as green lines allowing NDI to determine the length and location of cracks, helping to prevent any major damages to aircraft. (U.S. Air Force photo by Senior Airman Anania Tekurio/Released)