Tech. Sgt. Paul Green, 28th Maintenance Squadron electro-environmental section chief, performs a quality check of a foreign object and debris band cover at Ellsworth Air Force Base, S.D., July 27, 2012. The 28th MXS electro-environmental shop is responsible for maintaining all electrical and environmental parts of the base’s B-1 fleet. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)