Airman 1st Class Alexander Shaikh, 5th Maintenance Squadron non-destructive inspection journeyman, shines a black light during a fluorescent penetrant inspection at Minot Air Force Base, N.D., Oct. 18, 2016. The black light aids Shaikh in locating cracks and imperfections on parts of the B-52H Stratofortress and aircraft support equipment. (U.S. Air Force photo/Airman 1st Class J.T. Armstrong)