Army Pfc. Zachary Ross, left, and Army Col. Kenneth Locke, center, attach a neck brace on Air Force Staff Sgt. David Barrett in the emergency room after a simulated attack on a mobile aeromedical evacuation staging facility at the Joint Readiness Training Center in Fort Polk, La., Feb. 23, 2013. Ross, a health care specialist, and Locke, an emergency physician, are assigned to the 328th Combat Support Hospital. Barrett is assigned to the 439th Communication Squadron. Army Pfc. Zachary Ross, left, and Army Col. Kenneth Locke, center, attach a neck brace on Air Force Staff Sgt. David Barrett in the emergency room after a simulated attack on a mobile aeromedical evacuation staging facility at the Joint Readiness Training Center in Fort Polk, La., Feb. 23, 2013. Ross, a health care specialist, and Locke, an emergency physician, are assigned to the 328th Combat Support Hospital. Barrett is assigned to the 439th Communication Squadron. SHARE: Download: Full Size (4.66 MB) Tags: Photo Essays Credit: VIRIN: 411738-E-KBI26-535.jpg Photo Gallery