The original investigator of the famed Roswell UFO incident says he hopes an upcoming appearance in Las Vegas might produce a piece of "smoking gun" evidence or a new eyewitness.
Nuclear physicist Stanton Friedman has spent more than 30 years investigating the story about an alleged crash outside of Roswell, New Mexico. The military initially said the object was a flying saucer, but later changed its story and said it was really a weather balloon.
Friedman has interviewed dozens of witnesses over the years who allege the craft was something from outer space.
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