but it is not until kenneth arnold's sighting in late june of 1947 of what he describes to newspapers as flying discs, what is widely reported as flying saucers, that the modern ufo phenomenon begins. it spreads very, very quickly. over the july 4th holiday that year thousands of men and women contact authorities to report more than 850 sightings of ufos. that's never been paralleled since. there's never been such a frenzy of ufo sightings as there was over independence holiday in 1947, although sightings remain fairly common through to the early 1950s. you get pictures like this from new jersey from 1952, alleging, you know, a sighting of an unidentified flying object. unsurprisingly, you see a variety of efforts to try to explain this phenomenon. two of the most influential voices in that process are frank scully and donald kaho. scully was a writer for "variety" magazine who publishes in 1950 where he really focuses in on the story of flying saucers that crash in the american southwest. where did that crash take place? >> roswell. >> not roswell, but thank you for falling into the