If you liked this movie, you should also see: Capricorn One (1977)The Conversation (1974)Charley Varrick (1973)E.T. the Extra-Terrestrial (1982)Bullitt (1968)
A young inductee into the military is given the task of looking after some chimpanzees used in the mysterious 'Project X'. Getting to know the chimps fairly well, he begins to suspect there is more to the secret project than he is being told.