A B-1 bomber undergoes trouble shooting procedures from Airmen assigned to the 28th Aircraft Maintenance Squadron during the Phase II portion of an operational readiness exercise at Ellsworth Air Force Base, S.D., July 10, 2013. The ORE covered a wide range of operations and was designed to test Airmen’s ability to deploy personnel, aircraft and equipment. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)