LogicAndReality42 - the reason why the audio isn't quite in sync with the video is because of the compression that YouTube uses to reduce the file size of large files. You tend to notice this more on videos that are more than 10 minutes long. For example, this video is 10:22 in length. I have seen many of the clips in this video before and I can vouch for the fact that these clips are genuine and were reported on mainstream news channels on 9/11.