Pretty amazing site.
Edit: Kind of helps to have this 9/11 Timeline handy. (And I watched some of NBC's coverage of the first tower collapsing and it was stunningly inept. The camera was on the tower and you could clearly see it fall in on itself (4:38 mark). Tom Brokaw and Matt Lauer mention that part of the building had collapsed but seconds later Brokaw says that both of the buildings would probably have to brought down because of the damage. They then cut to the Pentagon and yap for almost the next 8 minutes. It wasn't until the 12:20 mark when finally Matt Lauer tells viewers of the total collapse and they pull the video to show.)
at 11:01 AM