Not forgetting "Bandahar Bush Snr" allowing the Bin Laden family (who they were extremely close friends of) to fly back home!  Knowing what we (think) we know now, 9 11 was executed by people other than those we were told. I looked heavily into the pure aviation aspect of it, and so many things were incorrect, from impossible speeds (without damage) to aircraft "pinging" a long time after the aircraft were downed, to the blackboxes at least one was a test unit that was supposed to be from 1 of the 4.