im not going to say i know anything about what really happened because i dont. but i do find it interesting that a steel structure has never been brought down by fire before or since 9/11. on that day 3 buildings came down two hit by planes and the other one wasnt. here is an interesting article i have found when i was at howstuffworks.com, http://www.arcticbeacon.com/articles...8131/27302.htm