U.S. Air Force Senior Airman John Cody, 51st Medical Operations Squadron medical technician, performs cardiopulmonary resuscitation on a simulated patient as part of Exercise Beverly Herd 17-1 at Osan Air Base, Republic of Korea, Feb. 28, 2017. Medics from the 51st MDG use exercises like Beverly Herd to prepare themselves for real-world contingency operations.

(U.S. Air Force photo by Airman 1st Class Gwendalyn Smith)