"CNN is reporting that there was a third explosion that caused the WTC 1 to collapse within itself ."

"CNN is reporting thatthere was a third explosion that caused the WTC 1 to collapse within itself ."

Third blast, CBS2_clip29.avi 21 seconds

http://www.youtube.com/watch?v=ZIkl5LardyE&feature=player_embedded

You can hear the explosion...

In this video:

You hear a whistle (probably a police officer on the street) at :16, and then a clear, distinct explosion at :19. Also pay attention to the structure of the Tower that you can see through the smoke from :16 to :19. You don't really notice movement of the collapse until just as the explosion occurs. Given that it there is typically a delay between sounds occurring and sounds being heard some distance away, it strikes me that the explosion you're hearing may occur before the collapse. Also, the person filming this video comments that he thinks it was a third plane that hit the building, again suggesting that he heard the sound, the explosion, and then saw the building come down. That is my interpretation, but it seems to be a reasonable one.

One last thing... There are also anomalies in the pyroclastic flow that the collapse generates, which you can see in this video. Look here (http://www.youtube.com/watch?v=DxucwMqSgbU) for further analysis of those anomalies.

Also see the flash

at :20 right at the point of collapse initiation.

Take a look at this

WTC witness Jeremy Fox, WPIX Dub1 95-108.avi

WTC witness Jeremy Fox, WPIX Dub1 95-108.avi

Jeremy Fox

Here is a video I edited to include only the most interesting portions of the Jeremy Fox interview: