Secretary Gates and Adm. Mike Mullen conduct a press briefing in the Pentagon. Secretary of Defense Robert M. Gates and Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, U.S. Navy, conduct a press briefing in the Pentagon to discuss the issues currently facing the Department of Defense on July 20, 2009. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 169112-C-NXX15-224.jpg Photo Gallery