I call your bluff. We do want in on this game.
Try to find us an example of a demolition which was carried out without people in the offices noticing - not just a rumor, but where you have proof (photos, work logs, other documentation) that teams of demolitions people actually sneeked in past security systems, cut holes in drywall, attached det cord, etc..
We need positive proof to show that it is plausible.
Also, while you're at it, try to explain, in a rational, factual way, how explosives could be surreptitiously moved into buildings which were patrolled by bomb-sniffing dogs, including dogs which were trained to detect thermite. Yes, thermite is one of the compounds they were able to sniff out.
Then, find us a real-world example of such a case when explosives in quantities of several tons were actually brought in this way.
You have no factual basis for the claim that there was even one incendiary bomb or one cutter charge anywhere in the WTC complex on 9/11. None.
It is a completely empty claim, proposed by people who don't care that it's empty. Nothing backed by tons more nothing, books, DVD's, lectures and websites which further add to the vast nothingness.
You can multiply your zero by infinity, but you will still have nothing. That's how bad it is for you. I'm not exaggerating in the slightest.