EIELSON AIR FORCE BASE, Alaska -- Ellswoth's B-1s and KC-10 Extenders from McGuire Air Force Base, New Jersey, sit on the Eielson AFB flightline Apr 9 during Red Flag-Alaska 07-1. Red Flag-Alaska enables aviation units to sharpen their combat skills by flying ten simulated combat sorties in a realistic threat environment. Additionally, the training allows them to exchange tactics, techniques, and procedures and improve interoperability. U.S. Air Force photo/Staff Sgt Joshua Strang.