What if those planes could have been talked down, or if someone had retaken the hijackers and landed the plane safely. NO PRESIDENT has ever had to order a plane shot down on US soil, so we can say all day that we would have shot them down, but until in that position it is all just opinion.
it's protocol to take down planes if they pose a threat to buildings.
It was reasonable to say that planes #3 and #4 were threats after 1 and 2 hit.
Come on dude. Presidents are paid to make these tough decisions.