.....Presumably the person who posted this on the site where I stumbled upon it knew about the Naudet Brothers Documentary of that day, but i would say this is the first 'STILL IMAGE' of that days events........whilst trying to find some answers to my own questions of this I ran into this helpful diagram............and incase there is no link to the large image I have found (forgive me, the squished preview image I see when posting don't look so hot).....