U.S. Air Force Tech. Sgt. Carmalita Williams teaches a Self-Aid and Buddy Care class to a group of 307th Bomb Wing Airmen during the monthly Unit Training Assembly, Aug. 2, 2014, Barksdale Air Force Base, La. Members who are required to take the course must complete the online computer based training and the hands-on class. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)