Senior Airman Mark Lee, an Electrical and Environmental craftsman assigned to the 28th Maintenance Squadron, unloads equipment from a box inside the E&E back shop at Ellsworth Air Force Base, S.D, April 12, 2017. Airmen from the E&E back shop have been using the state-of-the-art ECLYPSE tester that allows them to troubleshoot B-1 bomber parts nearly 98 percent faster. (U.S. Air Force photo by Airman 1st Class Randahl J. Jenson)