Master Sgt. Christopher Banks, a medical technician assigned to the 438th Air Expeditionary Wing, teaches a cardiopulmonary resuscitation class to a group of Afghan Air Force Airmen at the Afghan Air Base in Kabul, Afghanistan. Sergeant Banks, an air advisor with the 438th AEW, helps train the Afghan Air Force in the medical field. (U.S. Air Force Photo by Tech. Sgt. Brian E. Christiansen).