B-1 engine shop
ELLSWORTH AIR FORCE BASE, S.D. - Airmen 1st Class Adam Reinert, 28th Maintenance Squadron aerospace propulsion apprentice, inspects a B-1B Lancer engine for broken safety wires and missing parts, April 9. The B-1 engines are inspected after every 100 hours of flying. (U.S. Air Force photo/Senior Airman Marc I. Lane)