From the outstandingly sterile germ warfare facility to the stunning natural beauty of what is called the desert, this is an amazing film on many levels. I had expected it to be another simplistic view in the litany of 60s anti-war statement films, but it is not that, yet it makes the case for non-development of biological weapons more clearly than any of those over-the-top and jingoistic propaganda films do. And to make it all better, it comes with a thrilling plot, excellent cast and direction, suspenseful music score. I would have rated it a 10 but for the unlikeliness of some major plot directions, still they are handled in a manner that makes them possibilities if yet improbable. A great one to view alongside Andromeda Strain.