MISSION BRIEFING Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, receives a briefing on the U.S. Army Military Surface Deployment and Distribution Command's current mission while visiting Scott Air Force Base, Ill., June 19, 2013. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 956138-Y-XRO51-672.jpg Photo Gallery