The strangest thing about UFO sightings is that they've changed appearance over time. Way back in time they were stars, then chariots, then boats, the saucers, then orbs, then triangles, then cubes.
It implies consciousness is intimately linked with the phenomenon. They are likely to be manifestations of a person in an heightemned (spiritual) state of consciousness. Much the same as the way psychedelics will allow users to interact with beings in other realms.