U.S. Air Force airmen sleep during a flight aboard a C-130H Hercules aircraft from the 731st Airlift Squadron, Peterson AFB, Colo., during a flight from Nevada Air National Guard Base Reno, to Fort Hunter-Liggett, Calif., on June 19, 2012 during Exercise GLOBAL MEDIC 2012. Exercise GLOBAL MEDIC 2012 is a yearly joint field training exercise for theater aeromedical evacuation systems and ground medical components designed to replicate all aspects of combat medical service support.