He went looking for a ghost and made sure he found one. Says it all, really.
Now, if CCTV caught a figure moving around inside the chopper long after dark, and long after the museum closed - and no-one was looking for a ghost - well, maybe, just maybe, there could be a ghost story in that CCTV video.
There's a few "paranormal" incidents that have been captured on CCTV, and they would not be easy to fake.