The date of the first major terrorist attack on American soil. Also the first day three steel skyscrapers have collapsed vertically in free-fall into their footprints from fires alone. Also the first day a Vice President has ordered airborne interceptors to STAND DOWN and allow an airplane to purportedly crash into the pentagon (although no video has yet been released of an airplane hitting the building since the FBI seized the dozens of videotapes). Also... well I could go on all day.
Wow, WTC 7 fell down like it was demolished on 9/11 from some small fires, even though buildings hit directly with huge bombs dont fall down like that... that's weird.