U.S. Air Force Lt. Col. Derrick Willsey, a critical care physician assigned to the 1st Special Operations Support Squadron, listens during a crew brief at Hurlburt Field, Fla., March 2, 2011, before an aeromedical evacuation training mission for Emerald Warrior 2011. Emerald Warrior is an annual two-week joint/combined tactical exercise sponsored by U.S. Special Operations Command designed to leverage lessons learned from operations Iraqi and Enduring Freedom to provide trained and ready forces to combatant commanders. (U.S. Air Force photo by Staff Sgt. Andy M. Kin/Released)