U.S. Air Force airmen from the 42nd Aerial Port Squadron, Westover, Mass., unload cargo from a C-17 Globemaster III cargo aricraft at Schoonover Field, Fort Hunter Liggett, Calif., May 8, 2011, in support of Global Medic 2011. Global Medic is a joint field training exercise for theater aeromedical evacuation system and ground medical components designed to replicate all aspects of combat medical service support.