The ONLY rational conclusion is that it was taken down by demolition.
You think all the steel columns failed at once and it fell on its own footprint! From some little fires?
That is literally impossible.
There. You finally said it. It took ONLY twenty posts to get there. Not surprising, since the admins and moderators do not like 9/11 truthers here.
This is another reason why I don't like what passes for a conspiracy theorist these days.
They act like con men and get mad when they realize their marks know the con better than themselves.