Airman 1st Class Jon Bettenhausen, 28th Maintenance Squadron aerospace propulsion apprentice, selects tools from before working on a B-1B Lancer engine here, August 13. Airman Bettenhausen along with several others repair faulty pieces, replace broken parts and ensure proper functionality on B-1B engines. (U.S Air Force photo/Airman 1st Class Anthony Sanchelli)