Calvin Parker, 58, claimed that as an 19-year-old he was abducted by aliens who had lobster-like claws, probed him, and showed him visions of the future where he foresaw a plague and World War ThreeCalvin Parker, 58, claimed that as an 19-year-old he was abducted by aliens who had lobster-like claws, probed him, and showed him visions of the future where he foresaw a plague and World War Three