4th MDG conducts Code Blue exercise
Airmen assigned to the 4th Medical Group attach an automated external defibrillator, or AED, to a simulated victim as part of a Code Blue exercise, Oct. 16, 2015, at Seymour Johnson Air Force Base, North Carolina. AEDs are used to restore a regular heart rhythm after a victim has suffered cardiac arrest. (U.S. Air Force photo/Airman 1st Class Ashley Williamson)