the glass breaking could be due to the way the building was built, part of the building twisting right before/as it is started(ing) to collapse thus causing the windows to break.
Come on now, EVERYONE knows it was George W. Bush, Dick Cheney, and all the Halliburton employees in those buildings breaking all those windows out with the $600 hammers the military buys. The buildings twisted because "they" had already cut thru all the main support columns.
Of course all of them were killed, and for the rest of the Bush Administration imposters took their places.
Now THERE'S something to think about! Cue the Twilight Zone theme.....