Comment: You are tying yourself in knots. The official story is that

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You are tying yourself in knots. The official story is that

the steel got soft and collapsed. The question isn't why are there some core beams on top (there are other smaller beams on top too) but what are they doing flung out all the way to Church St., two football fields away from the nearest tower. Here you can see the cut beams being blown out at 80PMH (it has been calculated):

And here is the explanation (which I have shown you but you conveniently ignored.) It was a "banana peel" style demo, top-down rather than bottom to top. they are used for taller buildings where tipping might be a danger from a more common bottom to top implosion.

You aren't very good at this are you?

Release the Sandy Hook video.