I heard a story once, I forget where, but there was this guy who worked in something like area 51, he was a basically a janitor with the highest security clearance to clean up all the horrible messes. He said there where 5 levels, and on 1-3 humans and aliens readily communicated, and seemed like a normal interstellar office, but on levels 4-5 they experimented. Did horrific things in the name of science. So one day this guy took a camera to work, and recorded a bunch of the atrocities committed. When he returned from work government officials had his family, and wanted to barter them for the tapes. He fell off the grid from there.