UFOs are:

@xianc78 I had a teacher who was an airforce pilot during Vietnam. Told us a story about how they saw a UFO, called it in over the radio, and it promptly got elevated to someone higher in command who told them to turn back and not speak about it ever again.

@beardalaxy Yet, he was comfortable talking about it to you guys, but the military might let that slide because people make ridiculous claims like that all the time without evidence or proof.

I have a feeling that it might be militaristic in origin or a secret transportation method for shadow elites that allows them to travel intercontinentally at night without being detected, and the whole "aliens" explanation just being a cover-up for it all. And the reason why they won't allow the public to use it even without disclosing the elites use is because the technology behind it violates a lot of the mainstream understanding of physics and that can destroy the credibility of labs and universities around the world (another reason why modern science is gate-kept).

But there still is the possibility that they are aliens. Going back to what I said about mainstream science, maybe governments won't disclose the existence of alien civilizations because of the cultural impact it will cause globally, including the destruction of the scientific establishment.