REMEMBERING 9/11 Chairman of the Joint Chiefs of Staff Marine Gen. Peter Pace speaks at the Sept. 11 Memorial observance, honoring the 184 people who perished when American Airline 77 crashed into the Pentagon six years ago, Sept. 11, 2007. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 984144-M-THP91-138.jpg Photo Gallery