U.S. Army soldiers assigned to the 83rd Military Police Company move to assault positions while defending against enemy aggressors during convoy tactics training at Fort Hunter Liggett, Calif., May 17, in support of Global Medic 2011 and Warrior 91 11-01. Global Medic is a joint Reserve field training exercise for theater aeromedical evacuation system and ground medical components designed to replicate all aspects of combat medical service support.