There's an interesting point in this documentary, where the filmmaker illustrates the difference between a "yellow" fireball from a plane crash test, and the "silvery" flash from the Pentagon explosion.

Question: If the only image account of the crash was 5 frames from a parking lot security cam, then how in the fucking Hell did he get his hands on a straight shot of the explosion?

There was a secondary explosion some time later, but the filmmaker alludes to this mystery photo in a way which suggests it "is" a shot of the crash.

Also, small details are missed, like the "B-52" crashing into the Empire State building -- it was a B-25, not a B-52. 52's hadn't even been designed yet, let alone built. Ticky tack? Maybe, but in a film like this, any small missteps can throw overall believability right out the window.