What your video clip that you have linked to fails to show is the massive damage to the South side of WTC 7 that fatally compromised its structural integrity - Massive collateral damage caused by debris and pillars from the collapse of one of the major towers.
This is just one of many accounts of the damage to the building, prior to the collapse from one of the firefighting professionals attending, Captain Chris Boyle.
" So we go there and on the north and east side of 7 it didn’t look like there was any damage at all, but then you
looked on the south side of 7 there had to be a hole 20 stories tall in the building, with fire on several floors. Debris
was falling down on the building and it didn’t look good. But they had a hose line operating. Like I said, it
was hitting the sidewalk across the street, but eventually they pulled back too.
Then we received an order from Fellini, we’re going to make a move on 7. That was the first time really my stomach
tightened up because the building didn’t look good. I was figuring probably the standpipe systems were shot. There
was no hydrant pressure. I wasn’t really keen on the idea. Then this other officer I’m standing next to said, that building
doesn’t look straight. So I’m standing there. I’m looking at the building. It didn’t look right, but, well, we’ll go in,
we’ll see.
So we gathered up rollups and most of us had masks at that time. We headed toward 7. And just around we were
about a hundred yards away and Butch Brandeis came running up. He said forget it, nobody’s going into 7, there’s
creaking, there are noises coming out of there, so we just stopped. And probably about 10 minutes after that, Visconti,
he was on West Street, and I guess he had another report of further damage either in some basements and
things like that, so Visconti said nobody goes into 7, so that was the final thing and that was abandoned.
Firehouse Magazine: When you looked at the south side, how close were you to the base of that side?
Boyle: I was standing right next to the building, probably right next to it.
Firehouse: When you had fire on the 20 floors, was it in one window or many?
There was a huge gaping hole and it was scattered through there. It was a huge hole. I would say it was probably
a third of it, right in the middle of it. And so after Visconti came down and said nobody goes in 7, we said all
right, we’ll head back to the command post."– Capt. Chris Boyle
http://tinyurl.com/e7bzp "
This conspiracy theory has been done to death - every single inexplicable "fact" has been explained and debunked - frankly, this has turned into a Zombie conspiracy - it should just lie down and die.