U.S. Army engineers or "sappers" evacuate a soldier over an obstacle in a timed evolution during the medical evacuation portion of the Best Sapper Competition on Fort Leonard Wood, Mo., April 7, 2011. U.S. Army engineers or "sappers" evacuate a soldier over an obstacle in a timed evolution during the medical evacuation portion of the Best Sapper Competition on Fort Leonard Wood, Mo., April 7, 2011. SHARE: Download: Full Size (2.89 MB) Tags: photo essays Credit: VIRIN: 986508-H-DSX98-721.jpg Photo Gallery