Very quiet here.
Okay, so as a Christian i don't think UFOs are fallen angels.
I think they are programed AI machines from another civilization (which might be dead now) who are programmed to search the universe, observe and then report home (who might be dead now).
This explains why they're always watching us since ancient cave paintings until modern videos and never interact, because that's their programming.
The other reason i think they're artificial AI and not biological beings is because if a biological being, pulled the amount of G forces these objects pull in mid air, they'd be turned into mashed potatoes.
Could they use physics we don't understand? Sure, but i'm playing with the cards that i have (meaning the rules of physics we know) not the cards i wish i had.
A lot of atheists that i talk to also don't like aliens for some reason, they're very similar to Christians in this mindset. It's like aliens here on Earth puts some sort of challenge to their belief system i have gathered.
Neither camp likes aliens.
But for me as a Christian, aliens pose no challenge to my belief in God. I see them as a curiosity and a way of asking them existential questions while sharing our beliefs about God too.