Have you read any of Chuck Missler's take on this?
Have read a fair amount of Chuck M.
As I recall, he's inclined to believe that 100% of all UFO/ET stuff is 100% demons--including the craft as materialized demons.
I don't believe my relative worked around craft which were materialized demons.
I do believe that all the better known ET's are either demons in bioengineered living 'suits'
bonafide ET's from other places IN CAHOOTS WITH SATAN TOWARD A WORLD GOVERNMENT ETC. in line with Bible prophecy.
ALL CREATION GROANS EXPECTANTLY, EAGERLY FOR THE MANIFESTATION OF THE SONS OF GOD
speaks to me that all creation--including ET's homeworlds, is eager for creation's sin polluted state to be lifted at Armageddon by the ALL CONQUERING JESUS CHRIST KING OF KINGS AND LORD OF LORDS.