I simply don't believe this. You are exposing your dishonesty. Apart from the fact that it has been explained to you, above, are you claiming that a building can collapse without the air in it being compressed?
Hans
*sigh*
Let me explain. Again!! Right before the WTC towers were nuked to pulverized dust by the Star Wars beam of obliterating destruction, a giant ACME vacuum cleaner (hidden in the tower's basement) was switched on and sucked all the air out of the towers. The air thus gathered was collected in a giant balloon, hidden in WTC 7. Next to this balloon was a crossbow. Later that tragic day, Larry Silverstein gave the order to pull the trigger on the crossbow. This released an arrow that penetrated the balloon, which subsequently bursted, thus blowing up WTC 7.
Jeez, how often do I have to explain all of this?