The Strange Story of the Alien Abductee and Self-Proclaimed Alien Hunter
Some of the more spectacular and eyebrow-raising accounts within the UFO field have to do with what are usually termed alien abductees. These are those individuals who have been allegedly whisked away by alien entities for inscrutable reasons we will probably never understand, and they very often have incredibly weird stories to tell. Among these ranks is a former CIA agent, who not only claims to have been abducted by aliens on numerous occasions, but who also claims that this is going on on a wider scale than we ever realized and who has dedicated himself to hunting these entities down.
Source: mysteriousuniverse.org