If an object flies and it's unidentified, it's a UFO.
That what the acronym means.
Are they space craft from NASA, the Air Force, other governments, other planets or a demonic dimension?
I don't know.
Maybe none of the above.
Maybe all of the above.
I think it's safe for me to say that there are far more things about the world and the universe I don't know than what I do know.
I think I could say the same about all of mankind too.