U.S. Air Force Airman 1st Class Colin Lanterman, 20th Equipment Maintenance Squadron non-destructive inspection apprentice, checks for any cracks under a black light at Shaw Air Force Base, S.C., Jan. 15, 2019. The black light makes it easier to see a crack that may be hard for the human eye. (U.S. Air Force photo by Senior Airman BrieAnna Stillman)