When the Ghostbusters are shown busting - and presumably feeling good - in their montage, we see a newspaper cutting from the New York Post that carries the headline Ghost Cops Bust Chinatown Spook with an accompanying image of the team in full flow. At first glance, it seems the photographer must have been good at his job, considering how close he managed to get to the action, but then on closer inspection it seems the image is just a moment taken from the end of the movie when the Ghostbusters cross the streams to take down Gozer. So presumably the photographer travelled forward in time to take a picture from a bust that hasnt actually happened yet.