I can't really answer this Vertigo. It was on the Discovery channel, which has a lot of documentary type stuff. (Also an unfortunate predilection toward stories about Atlantas, UFO's, the Loch Ness Monster and the like.) So the idea that it was a documentary was part of my thinking, but I also kept the door open to hokum. As a guess I would say that they were trying to make people believe that it was a documentary. I might compare it to the radio broadcast of "the War of the Worlds" with its reporting style, rather than story style.