How many time did Jesus encounter demons and how did those encounters end? Jesus himself was tempted by Satan...no craft was mentioned.
How many times had the prophets been visited by angels and how did those happen.
The book of Job...
Nearly all visitations were done without a “type” of craft.
Just my opinion of course, but I think we might want to keep an open mind. These might be demons pretending to be something they aren’t.
Culture shapes what humans experience with their senses.
What would have been angels and demons a thousand years ago are now seen as “flying aircraft” and “grey aliens”.
One of the classics on this topic:
https://www.amazon.com/Passport-Magonia-Folklore-Flying-Saucers/dp/0987422480
and another critical book that all UFO buffs should read:
https://www.amazon.com/Flying-Saucers-Modern-Things-Skies/dp/0691018227
Vallee and Jung make folks like Elizondo look like a Neantherthal in comparison.
Explain Ezekiel and the flaming wheel.