Propulsion Shop
Airman 1st Class Alma Buenrostro, 28th Maintenance Squadron aerospace propulsion technician, removes bolts from a mixing duct during maintenance at Ellsworth Air Force Base, S.D., March 21, 2012. The propulsion shop was installing a mixing duct, flame holder, and augmenter fuel nozzles to make the engine serviceable. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)