Just a thought, but for all those loons and muppets who see UFOs everywhere there is that very small, tiny percentage of unexplainable cases, sometimes involving radar traces and corresponding visual observations from aircrew, with unknown aircraft capable of outrunning and outflying the latest military technology.
Add to that the thought that if just one alien abduction case happens to be true, with a person being taken and abused by representatives of a foreign (alien) power, then with those beings' seeming contempt for mankind and the technology at their disposal, planet earth's natives could be in for a hell of a shock one day.
Or to put it another way, history has shown many times that when a civilization comes into contact with a more advanced power, they generally don't come out of it very well. Just ask the Aztecs or Native Americans or Aborigines.
As I said, just a thought.
Last edited by Martin the Martian; 22nd Jun 2013 at 22:00.