At each sounding of the air horn, soldiers competing in the 2010 Army Reserve Best Warrior Competition here at Fort McCoy, Wis., run to each event during day five of the competition. Soldiers had to assemble three weapons, evaluate a casualty, identify and throw grenades, identify and assess a heat casualty and use hand and arm signals to communicate all while crew-served weapons were fired and explosions rocked the training area. This is the Army's 'train as you fight' methodology.