Sounds pretty damn loud to me.
Numb nuts 240, does any tape of any WTC building sound anything like that? Show me a sound clip like that. KH300 already posted similar comments about the audible levels involved but here is a video for you.
(insert 240 response, "but they....they...they said they heard three explosions")
Well they should have heard a hell of a lot more for 3 huge ass buildings, possbily 4 according to your new posts.