> But with WTC7, the video we have is of the roof of the back side (with respect to the collapse origin).
Which in itself seems a bit odd, not unlike the lack of footage of the Pentagon (publicly released footage, at least).
> So we don't have visual of the collapse progress until it reaches the fairly homogeneous progressive collapse phase.
Suggesting there is some uncertainty involved.
> The most notable facet of a controlled demolition is the sheer sound of the charges going off to initiate the collapse.
If one uses the traditional loud approach, agreed.
> I've had the pleasure of being able to view a controlled demolition live, and I can tell you that the sound is loud enough and distinctive enough that all of the rescuers working on the debris pile that was the twin towers would have been reporting the explosions.
Which in itself seems a bit odd, not unlike the lack of footage of the Pentagon (publicly released footage, at least).
> So we don't have visual of the collapse progress until it reaches the fairly homogeneous progressive collapse phase.
Suggesting there is some uncertainty involved.
> The most notable facet of a controlled demolition is the sheer sound of the charges going off to initiate the collapse.
If one uses the traditional loud approach, agreed.
> I've had the pleasure of being able to view a controlled demolition live, and I can tell you that the sound is loud enough and distinctive enough that all of the rescuers working on the debris pile that was the twin towers would have been reporting the explosions.
Certainly seems plausible.