I was watching Amy Goodman on LINK TV this morning. She was hold a debate between two fellows from Loose Change and two from Popular Mechanics. That's what lead me to this forum. Anyway, I thought the following might be of interest.
On May 16, 2006, a video tape was released to news stations. This tape is supposed to show a commercial jetliner crashing into the Pentagon. I made a recording of that video on my DVR when KABC aired it on their 6 pm newscast on 5/16/06. There are about 4 seconds of tape from the beginning to the instant the Pentagon explodes. I paused a recording of that on my DVR at the beginning of where the Pentagon first appears. While the recording was paused I was able advance the recording one "frame" at a time each time each time I pressed the FF (>>) button on my remote. There are 113 such "frames" from the beginning of the video to the instant the Pentagon explodes. This means that each "frame" is separated by about 0.035 seconds. (Actually, I learned later, from someone who knows about the technical details of video recordings, that each "frame" is separated by 0.0333 seconds)
An AP article I found on the Internet said that it is estimated that the 757-200 was flying 530 mph (777 ft/sec) when it hit the Pentagon. That means, then, that each "frame" represents about 26 ft of the plane's flight path. A 757-200 is 155 ft long. So, at 530 mph, if the 757 was just outside the field of view in one frame, 26 ft of it should be "sticking" into the next frame, 52 ft of it in the "frame" after that, 78 ft, and so on. It should take about 6 "frames" for the plane to come into full view. Of course, there might not be 6 frames if the field of view between the Pentagon and the extreme right side of the frame in the video is less than 155 ft.
From the beginning of the video there are about 80 frames where the "picture" does not appear to change at all. Then, an object, or a portion of an object, appears in the extreme right of the field of view. What is that object? There's not much there. On my 32" TV the object is about ½ inch by ¼ inch. In the next frame, the object is in the same position. In fact, that object stays in the same position for 32 frames. Then, all of a sudden the Pentagon explodes. In that first frame of the explosion there does appear to be some object "whooshing" across the frame at ground level. How fast would the plane need to have been flying to appear in only one frame? The answer depends on how wide the field of view is in that video, but based on objects that one can see in the video, I think it is quite reasonable to say that the field of view is at least half the length of a 757-200. That means for such an airplane to be in only one frame, it would have had to have been traveling MUCH faster than 500 mph. I'm not suggesting that the object that appeared in the right side of the video footage was a missile, especially since the object just "sits there" for a while after appearing (but, how could that object be an airplane, either?).
At the speed that the aircraft was alleged to have been moving there should be more that one frame that has something that looks like an airplane. My analysis does not prove that a 757 did not hit the Pentagon, but that video certainly does not prove that one did hit the Pentagon. And, again, what is that object that suddenly appears in the video, and then just sits there???