Students in the Advanced Contingency Skills Training Course participate in a scenario for mounted patrol, or convoy, operations training on May 3, 2009, on a Fort Dix, N.J., range. ACST, taught by the U.S. Air Force Expeditionary Center's 421st Combat Training Squadron on Fort Dix, prepares Airmen for upcoming deployments. (U.S. Air Force Photo/Staff Sgt. J.G. Buzanowski)