**The apparent plane mostly obscured by the foreground structure in the first frame is much too small to be a Boeing 757.

**The apparent vapor trail behind the apparent plane could not have been produced by the turbofan engines of a jetliner. It is consistent with the exhaust plume of a missile.

**The white color of the explosion in the second frame cannot be explained as the combustion of jet fuel. It indicates the use of explosives.

Skeptics seized on the video as evidence that the Pentagon was struck, not by a jetliner, but by a small plane, such as a remotely controlled drone, and that a missile was also involved in the attack. The failure of officials to release additional frames, ones that might show the plane clearly and reveal the first moments of the explosion, seemed to validate the five frames. Although peculiarities in the timecodes on the bottom of the cropped versions of the frames were widely noted, few bothered to ask whether the imagery in the frames had been edited.