Gen. Peter Pace addresses the audience. Chairman of the Joint Chiefs of Staff Gen. Peter Pace (right), U.S. Marine Corps, addresses the audience during a ceremony observing the sixth anniversary of the Sept. 11 terrorist attack on the Pentagon on Sept. 11, 2007. Pace joined Secretary of Defense Robert M. Gates in laying a wreath in memory of the 184 people who lost their lives at the Pentagon in the attack. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 870313-R-IMM00-243.jpg Photo Gallery