A new simulation exercise is now in place for US troops at the Camp Atterbury Joint Maneuver Training Center near Edinburgh, Indiana. Built primarily from off-the-shelf components, the system is designed to better prepare soldiers for the physical and psychological challenges of IED attacks, which are currently the number one threat to military personnel stationed in Afghanistan. Situated inside a mounted vehicle and positioned in front of a large screen, service members are exposed to jarring explosions, smoke, noise and poor visibility -- all common