Airman 1st Class Charles Mills, 28th Maintenance Squadron nondestructive inspection technician, rinses hydrophilic remover from a hydraulic accumulator piece at Ellsworth Air Force Base, S.D., Aug. 9, 2013. After the part is thoroughly rinsed, it will go through the developer stage where water suspended powder is applied, pulling penetrant from the cracks to enhance visual inspection when finally examined under black lights. (U.S. Air Force photo by Airman 1st Class Anania Tekurio/Released)