Soon after he retired, he was visiting my folks and someone mentioned a recent UFO story in the news and scoffed at the idea of ETs existing, let alone visiting. My father's cousin lost the twinkle in his eye and got stone, cold serious. He said that he couldn't say much, but that we should not laugh so quickly at the UFO stories.
My father's cousin was a guy who was involved in much political lobbying, both in private business and in his service as a reserve military Officer. I don't know how well he was connected to the UFO stories or to what his point of reference may have been. But he was not of the tinfoil hat crowd nor did he have much time for hair brained conspiracy theories that traveled far about government cover-ups, etc. in that era.
That old guy's instant reaction to the subject of UFOs has me thinking there may be something to it.