Behind locked doors
PETERSON AIR FORCE BASE, Colo. – Capt. Emma Pinkerton, Cheyenne Mountain Air Force Station Medical Aid Station nurse, applies simulated first aid to a mock victim during a mass casualty exercise during button-up contingency triage training at the Cheyenne Mountain AFS, Colo., March 3, 2017. The training is designed to stress Cheyenne Mountain AFS medical responders, who are on call from Peterson Air Force Base Medical Clinic, to simulate the stress that a future buttoned up mass casualty event could cause. (U.S. Air Force photo by Steve Kotecki)