Adam Stock, the lead pilot for 29 Palms Unmanned Aerial Systems, out of Twentynine Palms, California, pilots a ScanEagle unmanned aerial vehicle at Fort Hunter Liggett, Calif., May 19, 2011, in support of Global Medic 2011 and Warrior 91 11-01. 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. Warrior 91 11-01 was a tactical exercise in which U.S. Service members responded to simulated enemy attacks as part of Global Medic 2011 .