ALL OF THEM????????????????? there are many. The way the buildings fell, straight down, should be anyone's first clue. That is IMPOSSIBLE,,,,,,,,, without help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
BUT I "BOUGHT" THE EXPLANATION OF THE PLANES HITTING THE WORLD TRADE CENTER AND THE FIRES BROUGHT THEM DOWN.
I GUESS IT'S POSSIBLE THAT YOUR THEORY IS CORRECT: BUT I HATE TO THINK OF WHO OR WHAT WOULD "HELP" TO BRING DOWN THE WORLD TRADE CENTER.
GOING TO BED, BUT WE'LL COVER THIS AGAIN AT ANOTHER TIME.
NICE "TAWKING" TO YOU!