Published on Jun 1, 2012 FAIR USE Title 17 USC section 106A-117 of the US Copyright Law: This video is fair use under US copyright law because it is (1) noncommercial (2) educational purpose only (3) transformative in nature, and (4) does not compete with the original work or have any negative effect on its market. UFO Files Alien Encounters. Go to the limits of human experience…and beyond. From the fringes of the galaxy to our own backyards, the UFO FILES searches for evidence of life beyond our world. Tracing the long, convoluted history of UFO encounters and research, this unique series opens new windows into the controversial field. Join us as we reveal what could possibly be evidence of "alien encounters." Since the 1960s, thousands of UFO landings, flyovers and collisions have left scientific evidence behind for study. These events have become known in the field of UFOlogy as the "Trace Cases." There are over 3000 documented UFO physical Trace Cases and they have occurred in over 90 countries around the world. From impressions in the dirt, burned or broken vegetation and trees to scientific abnormalities that have yet to be explained, Trace Cases offer up some of the most convincing evidence of the UFO reality. The facts are mounting, and this comprehensive survey offers the best look yet at what could possibly be evidence of Alien Encounters.