Nigel: Let’s get started. Safety! What does safety mean to us. Well, of course we don’t want anyone to get hurt on their hunting, fishing or hiking or whatever trips to Earth. However, we also don’t want the Earthlings to know for sure that we even exist. It’s bad enough that a few of those heavily armed Yahoo’s are constantly looking for us. We don’t need the whole planet searching everywhere, sending up space probes and making things difficult for the whole galaxy if we can help it. I mean, you remember what happened on Tatooine.
Bungalow Bill's Outer Space Adventure