Airmen from the 28th Maintenance group inspect a B-1 bomber for damages during an Operational Readiness Exercise held at Ellsworth Air Force Base, S.D., Feb. 24, 2012. These exercises test the readiness of Ellsworth’s airmen, aircrews and aircraft for worldwide contingencies. (U.S. Air Force photo by Airman 1st Class Anania Tekurio/Released)