Gary Bates is an author and speaker known for examining UFO sightings and extraterrestrial claims through a Christian worldview. In Alien Intrusion – UFOs and the Evolution Connection, Bates explores reports of unidentified flying objects and alien encounters while discussing how these phenomena intersect with beliefs about human origins and evolution. His work evaluates eyewitness accounts, cultural influences, and scientific interpretations, presenting an argument that many UFO experiences may have psychological, cultural, or spiritual explanations rather than extraterrestrial origins.