Students practice combat tactics and patrolling. Students in the Air Force Advanced Contingency Skills Training Course practice combat tactics and patrolling during field training on a range at Fort Dix, N.J., on Dec. 4, 2007. The course is taught by the U.S. Air Force Expeditionary Center's 421st Combat Training Squadron and prepares airmen for upcoming deployments. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 883455-B-BUG19-161.jpg Photo Gallery