U.S. Air Force Airmen practice artificial ventilation during a Basic Life Support training hosted by the 633rd Medical Group Education and Training Center at Joint Base Langley-Eustis, Va., Dec. 6, 2017. The BLS and other courses offered are designed to train medical personnel to be fit expeditionary forces and mission ready medics, while also teaching them to deliver trusted care to the patients they serve. (U.S. Air Force photo by Airman 1st Class Alexandra Singer)