Tornado Alley (PROG)

[woofer]

Don't get too red in the face, Alex. Dr. Shyam Sunder says that the North Tower (tower 1) fell in 11 seconds, the South Tower (tower 2) in 9.

Don't watch the rest of the video...it's that stupid stuff that I can't stand.
He was HEAD of NIST for the 9/11 investigation.