If UFOs are real where do they come from and what is their nature. They could be ships from other worlds but they might be time machines from the future or ships from other dementions, they could be from other planes of existence. They might even be from God?
Tentatively, I am inclined to think that all of those and more could be part of the phenomenon. And, as Jacques Valle concluded, there is an element of deception about the whole thing that suggests great intelligence, discipline, and potentially malevolent purpose.