Demons do exist and astral projection is real. I have had too many experiences throughout my lifetime to discount them as coincidences from having conversations with dead relatives telling me about future occurrences to wifey waking me in the night because I'm speaking another language and she is terrified because she knows my spiritual history.
She even taped me talking to spirits at night in a language I have no comprehension of, after some research I discovered the language is aramaic.
I have had pleasant experiences and not so pleasant I think it has to do with your spiritual being and what you attract. Every time I was confronted by an evil being I started quoting bible scriptures I don't even know and the being would retreat. I have tried to do some research into it but its hard to filter the real from the bullshyt on the internet.
I don't know about demons profiling as UFOs though