Stretcher Practice U.S. Navy and Air Force medical personnel load a simulated casualty onto a stretcher during a mass casualty exercise at an undisclosed location in Southwest Asia, Dec. 23, 2015. U.S. and Canadian troops participated in the joint exercise to hone the coalition’s medical response capabilities. U.S. Marine Corps photo by Sgt. Rick Hurtado SHARE IMAGE: Download Image: Full Size (1.91 MB) Tags: U.S. Navy Corpsmen, Lead Photos, mass casualty exercise , U.S. Air Force, U.S. Army, Southwest Asia, U.S. Marines, All images, U.S. Central Command Photo By: Marine Corps Sgt. Ricardo Hurtado VIRIN: 151223-D-HV319-017.JPG Photo Gallery