U.S. Navy Petty Officer 1st Class Gregory Juday, Expeditionary Combat Camera Training Department trainer, instructs Sailors as they train in the Humvee Egress Assistance Trainer, or HEAT, at Fort Eustis, Va., Feb. 27, 2013. The trainer is one of many simulators implemented across the Department of Defense to prepare military members for the tests of real-life emergency situations, while allowing them to experience realistic combat situations without any of the dangers. (U.S. Air Force Photo by Airman 1st Class R. Alex Durbin/Released)