An improvised explosive device detonates while a convoy passes, during IED Defeat training, in support of Warrior Exercise 91 12-01/ Global Medic 2012 at Fort Hunter Liggett, Calif., June 16, 2012. Warrior Exercise gives participating units an opportunity to rehearse military maneuvers an tactics such as security, convoy operations and quick reaction drills during simulated enemy attacks. Global Medic is a joint field training exercise for theater aeromedical evacuation systems and ground medical components designed to replicate all aspects of combat medical service support.