(sirens) >> welcome back to fox news. we have a very tragic alert for you right now. an incredible plane crash into the world trade center at the lower tip of manhattan. >> the most notable event in president bush's 8 years in office was the attacks on 9-11. from the attacks themselves to the criticism afterwards. president bush brings us back to the hoarror rific events of tha day. >> we had a national tragedy. two airplanes have crashed into the world trade center in an apparent terrorist attack in our country. >> we are hearing right now of another explosion has taken place at the pentagon. >> the united 93 flight