I don't doubt some people have seen what they thought were ETs. I also don't doubt some people have seen what they thought were ghosts. I also don't doubt the Bible. So I think these sightings are angels or fallen angels making themselves visible. Earth is God's main concern. Why do I think so? Because he sent his son here. I don't think there are other life forms.

I also think the Earth is flat, the planets are wandering stars, and we never went to the moon. There, I said it.