A prophesy from the Book of Daniel says that near the end of time "THEY shall mingle THEIR seed with the seed of men"...who is the THEY....but it also says it won't work as well as it did in Genesis 6, THIS time around it will be like mixing iron and clay..and the Greek word for seed is "sperma", so could Daniel be MOST LITERALLY referencing a harvesting of human sperm in attempts to create hybrids......very very very interesting....so the connection is made between flying saucers, demons, and fallen angels. Before I was a Christian, in high school, I used to reach out with my mind to psychically communicate with aliens in flying saucers that I sensed were in the sky even if I looked up and didn't see them, and they told me their leader was...Satan...interesting...most interesting. So we have "greys" in flying saucers saying that Satan is their supreme leader....well that explains their intense interest in collection human genetic and reproductive material during abductions. They seem interested in that at the expense of many other things they could be doing during contacts with people. I have heard of thousands of testimonies that when people are beginning to experience an abduction or visitation by the "greys" that very often invoking the Lord's name causes them to go away and the experience to cease immediately. The greys themselves could be demon spirits, or if they are in the flesh, some sort of hybridized bodies for demon spirits to dwell in so they can operate in this world. SOME greys are in the flesh, I have heard a few reports of them being killed with gunshots. I myself have personally only fought with evil spirits in spiritual warfare, but if I ever encounter a creature like that in the flesh, I will quickly kill it if I have quick access to a suitable weapon. It does seem to me they are not real fast to manifest themselves to me, whether or not they would appear on a form that can be physically killed, I think I intimidate them. One one hand I would be satisfied to visually see pain inflicted on them, but then I remember what Jesus said to the disciples "rejoice not that the demons are subject to you, but rather than your names are written in heaven". So I do keep things in perspective. Besides focusing to a greater degree on the names of believers being written in heaven is a greater hedge of protection against deception and harassment by these creatures anyway.