Marine Corps Staff Sgt. Kevin Bennear sings "The National Anthem." Marine Corps Staff Sgt. Kevin Bennear sings "The National Anthem," while accompanied by The U.S. Marine Corps Band during the Sept. 11 Observance Ceremony 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 building. ( SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 389963-R-DSQ16-289.jpg Photo Gallery