A U.S. Air Force Service member prepares to administer an electrocardiogram during a lifesaver training at Langley Air Force Base, Va., Nov. 19, 2014. Members of the 633rd Medical Group education and training office at USAF Hospital Langley are responsible for providing the most current training practices so that individuals attending courses can return to their units with elevated skills and knowledge. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)