President Bush speaks during the Sept. 11 Remembrance Ceremony at the Pentagon. President George W. Bush speaks during the Sept. 11 Memorial Service at the Pentagon. More than 13,000 people attended the service to remember those who lost their lives one year ago when terrorists crashed a commercial airliner into the Department of Defense Headquarters. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 407817-I-YGV89-513.jpg Photo Gallery