If a previous minister of national defense of a big country started talking publicly about his belief that some UFOs are interplanetary vehicles carrying visitors to Earth, would you believe him or not? Well, stepping up to the plate is the Honorable Paul Hellyer, a former deputy prime minister of Canada and the longest serving current member -- ahead of Prince Philip -- of the Queen's Privy Council, which is made up of prominent Canadians appointed to advise the queen on issues of importance to the country." As Canadian minister of national defense in 1963, Hellyer was responsible for integrating and unifying the Royal Canadian army, navy and air force into a single organization, the Canadian Armed Forces. "Oh, I'm absolutely convinced of it. These things were not invented here," Hellyer told AOL News. This week, he's presenting his views on UFOs at the International UFO Congress in Scottsdale, Ariz. Trusted political and scientific sources whom Hellyer has talked to have suggested that the United States has developed new forms of energy at top-secret "black operation" installations, using reportedly extraterrestrial technology. In his book "Light at the End of the Tunnel: A Survival Plan for the Human Species," Hellyer claims that an American "shadow government" is behind this activity. "Paul Hellyer's story is an important contribution to the literature of modern Western civilization. His experience in government, his interest in exopolitics and the issues of sustainability of civilization are significant areas of current discourse," wrote Apollo 14 astronaut Edgar Mitchell, founder of the Institute of Noetic Sciences.