[Emu]

Where do you get the "dark black smoke indicates that the fire is going out?" I don't recall seeing many fires sputter like that. Usually dark black smoke indicates something is burning, probably things like computer hardware and the varnish typically found on desks and other wooden furniature common to a large building like the WTC. I don't know that much about it, but that stood out as odd "evidence." Besides, even if the fires WERE going out, they still did their damage. The heat doesn't just go away when the fire's gone.