U.S. Air Force Senior Airman Christian Silva, an aerospace medical technician, poses for a photo Aug. 15, 2014, at Royal Air Force Lakenheath, England. While previously stationed at Misawa Air Base, Japan, Silva helped save the life of a U.S. Navy Sailor who collapsed from cardiac arrest at the base’s gym. (U.S. Air Force photo Airman 1st Class Dana Butler/Released)