The following article contains descriptions of animal cruelty. It could be triggering for some readers.The production of Francis Ford Coppola's seminal war film Apocalypse Now was infamously difficult, if not borderline disastrous. Although it resulted in an all-time classic movie, it's also a clear example of an auteur's vision pushed to dangerous extremes. According to Charlie Sheen, the son of the film's lead, Martin Sheen, he attended the movie set when he was just 10 years old, and witnessed the chaos in person — including an event that marked him forever.