Almost every big budget movie uses special effects and video compositing so whats to say it wasnt used to create 2 fake planes hitting buildings while using real missiles to creat explosive effects


Check these too

http://sajha.com/sajha/html/index.cfm?ThreadID=84653

http://sajha.com/sajha/html/index.cfm?ThreadID=99978


If still in doubt watch this. It proves missiles being used to substitute as planes and underground nuclear devices used to take down the buildings.











You can actually see the missile hitting the pentagon in this one