No President in their  right mind would just sit there, unless he is hiding behind the kids!  Look at his expressions...Guilty  He still sat there for 11 min after the second attack...didn't want to face any problems until the bombs blew...fishy at the least...Investigate by the people not the people that set the bombs...No building has ever come down from fire in the history of America...Oh I know there's always a 1st