Secretary Gates and Adm. Mike Mullen conduct a Pentagon press conference. Secretary of Defense Robert M. Gates and Chairman of the Joint Chiefs of Staff Adm. Mike Mullen hold a Pentagon press conference to discuss the resignation of Gen. Stanley A. McChrystal on June 24, 2010. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 900430-K-AXL06-761.jpg Photo Gallery