9/11 World Trade. Nineteen terrorists hijack 4 commercial airliners (two Boeings 757s and two Boeings 767s), killing 2,977 people.
American Airlines (AA) Flight 11 hit first, at 0846 hrs., the North Tower of World Trade Center. Seventeen minutes later the South Tower was hit by United Airlines (UA) Flight 175. Both collapsed within 1 hr. 41 minutes. AA Flight 77 crashed into Pentagon at 0937 hrs. and the final UA Flight 93 targeted the White House but the passengers (who were alerted of the previous attacks) revolted against the hijackers who crashed the plane into a field near Shanksville, PA at 1003 hrs.