my father is a retired United 777 pilot and he lost co-workers on both united aircraft... that ball of fire coming out of the tower in the photo is (or was) United 175 my dad's friend Al Marchand died in that fireball he also knew the captain dad was out on a flight when this happened and from 9am to 3am we had no idea where he was.... we did't know he was safe in Germany for hours it was a very traumatic day for my family