Senior Airman Mark Lee, an Electrical and Environmental craftsman assigned to the 28th Maintenance Squadron, troubleshoots an electrical component from a B-1 bomber using the state-of-the-art ECLYPSE tester inside the E&E back shop at Ellsworth Air Force Base, S.D., April 12, 2017. This state of the art tester has cut the troubleshooting process time for a part from 10 hours to 10 minutes. (U.S. Air Force photo by Airman 1st Class Randahl J. Jenson)