From what I remember, the plane went missing and off course for 6 hours with transponders turned off. It is not out of the realm of possibility that in a post 9-11 world, military assets were scrambled to try and find the plane. The only thing that really intrigues me thus far is nobody has been successful in debunking it for almost a week now. Some who have extensive knowledge in CGI have claimed if this is a fake, this is = to a digital da vinci level of talent with CGI and adding extraordinary level of detail to it.