Expeditionary Skills Refresher Course
U.S. Air Force Tech. Sgt. Shanna Bufkin, 186th Air Refueling Wing Medical Group member, demonstrates how to tie a sling on Airman 1st Class Kyle Koch during the Expeditionary Skills Refresher Course at the Combat Readiness Training Center, Gulfport, Miss., July 14, 2015. The refresher course included both Self-Aid Buddy Care and Chemical, Biological, Radiological, Nuclear and Explosives survival. (U.S. Air National Guard photo by Senior Airman Jessica Fielder/Released)