If you told me in the early 1960s that I'd turn into a full-time ufologist, I would have laughed my head off," Stanton T. Friedman, a former nuclear physicist who was honoured with a proclamation this week by the City of Fredericton, says. "I preferred science and people, not science fiction. But how can you not believe?" If not New Brunswick's favourite son, Stan Friedman is certainly among its most famous. For 40 years, Carl Sagan's former classmate at the University of Chicago has lived in Fredericton while trying to convince the world of the existence of invaders from outer space. "I have never seen a flying saucer and I have never seen an alien, but I have talked to people who have," Friedman says. He is 73, has white hair and a white beard and chatters at warp speed. "I am still an optimist." An expert in nuclear aircraft fission, fusion rockets and power plants for space travel, Friedman worked 14 years on advanced and highly classified projects for General Electric, General Motors, Westinghouse, TRW and McDonnell Douglas, among others. He has given lectures on flying saucers at 600 universities over the last four decades, has testified for Congress and spoken at the United Nations twice and has appeared on television shows around the world. Friedman's scientific background, years of navigating through thousands of documents and hundreds of interviews with witnesses led him to the conclusion that aliens are more than a myth. "After a while, you get used to the nasty, noisy negativists and the ancient academics,'' he says. "And years ago, I got angry at the government officials who were lying through their teeth. It got me started on a crusade, in a way. I'm a good detective when I set out to be."