Indeed it was a plane!! I was at the Pentagon on that fateful day and in the midst of all the confusion our section evacuated just outside the point of impact. I saw parts of the tail of the aircraft. My friend who is an Air Traffic Controller at the Pentagon and working that day saw the aircraft and impact. The ATC tower at that time was probably within 150 feet of impact. This video is complete nonsense. And those windows, they are blast proof, they cost 10k a piece. In fact, firefighters were trying to break those windows with sledgehammers to no avail.