PLOVDIV, Bulgaria -- Capt. Michael Mullen (front) and Staff Sgt. Joseph Mooney carry a patient from the medical staging facility at Krumovo Airport here Sept. 8 as part of Exercise Cooperative Key 2003. The exercise is a multinational exercise designed to enhance the interoperability of NATO and partner nation air forces through cooperation and familiarization of the organization's procedures. Mullen and Thackery are assigned to the 86th Aeromedical Evacuation Squadron at Ramstein Air Base, Germany. (U.S. Air Force photo by Staff Sgt. Marie Cassetty)