As the first presidential inauguration after the September 11 attacks , security was tighter than previous ceremonies . The inaugural parade route as well as other related sites were guarded by 13,000 police and soldiers , in addition to aerial patrols by helicopter and fighter aircraft and rooftop sharpshooters . In downtown Washington , a 100 square block area was closed to traffic
September 11 attacks
September 11 attacks
Second inauguration of George W. Bush