This is something that has always amused me, and I have never been able to think of any kind of reasonable explanation for it. In Star Trek IV: The Voyage Home, when the Klingon is complaining to the Federation people about the shenanigans with the Enterprise in the previous movie, they are viewing footage of the incident on a screen. Here we see outside shots of the enterprise, and we see it exploding, in shots taken directly from Star Trek III. How did they manage to get such footage? Were there cameras floating around in the space around the ship? Would such devices survive the explosion, and how still, would they record the ships subsequent descent into the atmosphere of the planet?