I just noticed that several of Ingo Swann's books are now available on the Amazon Kindle platform for a reasonable price. This is notable because all have been out of print for some time. I managed to download some bootleg PDF scans a while back, but paper copies of "Penetration"--his most intriguing book--were selling for over $100. The Kindle version is at my impulse-buy threshold of $.99.
Remote-viewing ET is regarded as fringe even within the fringey UFO field, but I think it's a more valid pursuit than, say, using regression hypnosis to recover various UFO "memories."
I haven't read "Penetration" in a while, but I'm inclined to think now that it's *probably* mostly fiction, for several reasons--a main one being that Swann argues that the moon has an atmosphere, which is demonstrably false. But I suspect that he weaved in some elements from his personal experience. Swann probably remote-viewed several "alien" targets at various times and come back with some anomalous data, so I've just never been able to completely dismiss the book as entirely fiction.