Airman 1st Class Jeffrey Mendenhall, 28th Maintenance Squadron aerospace ground equipment technician, adjusts the brakes on a universal maintenance stand during scheduled maintenance at Ellsworth Air Force Base, S.D., April 18, 2012. These brakes are serviced periodically to ensure safety and serviceability. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)