>>A plane flying at 757 max cruiser speed of 914 km/h will cover 254m so if the surveillance camera at the pentagon had the lowest FPS recommended by the FBI for such a camera of 2 FPS means that the space covered by the camera should be less than 127m in order for the plane not to be there. And I do not even believe that the pentagon will use such a "crappy" camera for it's security surveillance, do you?

One, you're assuming that the CIA would consider advice from the FBI before 9/11. Second, the security camera was not intended to capture a plane flying into the Pentagon. It appears as though its purpose was to record cars, as it's just beside a road entering the Pentagon, and in the video easily found by using Google, you can indeed see a car passing before the camera (at a speed considerable slower than 914 km/h).