I get that, and your right. The exception though is this is New York City. Camcorders and video surveillance were everywhere. Every tourist had hand helds at the time. I wasn't a spring chicken when it happened, but good point to make considering the young ones that wouldn't think of that. There's a few videos luring around the internet yet that have the explosions but no airplane images. Some speculate the angle of the video and how that makes sense. I beg to differ. I've heard a few cases of camcorders being confiscated or videos being posted and blacklisted.

Good point though