DIALOG DISCUSSION U.S. Army Gen. Martin E. Dempsey, right, chairman of the Joint Chiefs of Staff, talks with U.S. Marine Corps Commandant Gen. James F. Amos during a Defense Chiefs Strategic Dialog with the U.S. Joint Chiefs of Staff and their British counterparts in London, June 10, 2014. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 146268-C-NRN68-742.jpg Photo Gallery