U.S. Air Force Airman 1st Class Austin Hall, a non-destructive inspection journeyman with the 379th Expeditionary Maintenance Squadron Fabrication Flight, rinses a piece of metal with an iron particle solution under a black light at Al Udeid Air Base, Qatar, Feb. 9, 2017. Hall was conducting a magnetic particle inspection to look for defects in the metal. (U.S. Air Force photo by Senior Airman Miles Wilson)