also never seen video of the roswell ufo incident. >> and he explained that in 1947 he worked for the army air force and he was involved in photographing the recovery of a crash vehicle and these creatures. that's where the story really started. >> the roswell story first hit headlines in 1947 following reports that a ufo had crashed in new mexico. >> there was scattered debris. the whole thing weighed just a few pounds. it was foiled paper, sticks, tape, and rubber. immediately the government came in and they said oh, it's a weather balloon and that's that. >> rumors of a government coverup begin to circulate. and before long, the story starts to include reports of extraterrestrials on board. but if unearthly beings were recovered, what happened to them? >> he showed me the film. it was remarkable because it was obviously the autopsy of a creature of some kind. you see surgeons. certainly they're operating with