Master Sgt. Richard Burley, 28th Maintenance Group wing avionics manager, performs a quality control check during an equipment upgrade to a B-1 bomber’s radar system at Ellsworth Air Force Base, S.D., April 11, 2012. These radar system upgrades are done to update electronic systems to newer and lighter versions that save maintenance time while increasing the reliability of the system. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)