Also, Leolaia,
Now that I am DF'd and it's in the open, I was a NYC building inspector from 1996-2002.
I hold two degrees in engineering and business management. I actually met Mr. Larry Silverstein myself.
Wake up to the actual events. Two buildings fell from commercial airliners wrecking them, causing the irreversible damage to other surrounding buildings. One needed to be pulled immediately for fear of it falling while rescue crews were in the area, over the next few days.
This information is publically available, at a cost. Go down to 31 Chambers Street, Room 103.
Thanks,
Matt