A student in the Advanced Contingency Skills Training Course responds to a scenario during a training session in combat first aid on Feb. 5, 2009, on a Fort Dix, N.J., range. ACST is taught by the U.S. Air Force Expeditionary Center's 421st Combat Training Squadron and prepares Airmen for upcoming deployments. (U.S. Air Force Photo/Tech. Sgt. Scott T. Sturkol)