The idea [of alien abductions] was simply not part of the world view that I had been raised in. I came very reluctantly to the conclusion that this was a true mystery. I did everything I could to rule out other sources. Some of these people are abused. But they're able to ... distinguish clearly the abduction trauma from other forms of abuse. Some forms of psychosis or people making up stories - I could reject that on the basis that there was no gain in this for the vast majority of these people. I've now worked with over a hundred experiencers intensively, which involves an initial two-hour or so screening interview before I do anything else. And in case after case after case, I've been impressed with the consistency of the story, the sincerity with which people tell their stories, the power of feelings connected with this, the self-doubt - all the appropriate responses that these people have to their experiences. There are aspects of this which I believe we are justified in taking quite literally. That is, UFOs are in fact observed, filmed on camera at the same time that people are having their abduction experiences. People, in fact, have been observed to be missing at the time that they are reporting their abduction experiences. They return from their experiences with cuts, ulcers on their bodies, triangular lesions, which follow the distribution of the experiences that they recover, of what was done to them in the craft by the surgical-like activity of these beings.