Defibrillator Action Air Force Master Sgt. Juan Diaz operates a defibrillator in the Keesler Medical Center emergency room at Keesler Air Force Base, Miss., April 27, 2017. Diaz is a medical technician assigned to the 81st Medical Operations Squadron. Air Force photo by Kemberly Groue SHARE: Download: Full Size (1.79 MB) Tags: Air Force, Northcom, Northern Command, training, Airmen Credit: Kemberly Groue VIRIN: 170427-F-BD983-018A.JPG Photo Gallery