Jesse Prince posted a documentary on his blog back in January. The documentary he linked is an hour long. Jesse poses the question of this being a source of Hubbards dianetics. http://princejesse53.blogspot.com/2016/01/us-army-documentary-film.html https://www.youtube.com/watch?v=kDNoaSMKx0g http://www.filmpreservation.org/userfiles/image/PDFs/LetThereBeLight_ProgramNote.pdf The documentary was made in 1945 by John Huston, but the government suppressed it. It was finally released to the general public in 1980.