Secretary Gates and Adm. Mike Mullen conduct a press briefing. Secretary of Defense Robert M. Gates (left) and Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, U.S. Navy, conduct a press briefing in the Pentagon on Nov. 1, 2007. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 541227-U-IUH52-322.jpg Photo Gallery