broadcast live by television helicopters which then horrifically spots the second attack plane, a united airlines hijacked from boston taking dead aim at the world traits tower second tower. it's approximately 90 3 am. >> where can i meet you? i'm across the street. a second airplane just ran into the building. >> emergency officials estimated 20,000 or more people may, have been inside the two buildings at the time of the attack. eyewitnesses report victims falling, and in some cases jumping from the two buildings. >> there were people falling out of the sky. >> at 9:29 am, president bush in florida addresses the nation for the first time. >> terrorism against our nation will not stand. >> but in the nation's capital, just 11 minutes later, 9:40 am, a third hijacked plane. an american flight out of