After a national tragedy, we grieve, we process, we debate — and eventually, we dramatize. Five years after 9/11, Hollywood gave us not one but two feature films about deadliest attack on American soil. There was Paul Greengrass' United 93, a sober thriller set aboard a hijacked plane, and there was Oliver Stone's World Trade Center, which starred Nicolas Cage's mustache. Two years later came The Hurt Locker, Kathryn Bigelow's Oscar-winning look at the war America launched in response to the 9/11 attacks. Four years after that, Bigelow returned with Zero Dark Thirty, the story of the manhunt for Osama bin Laden. And in 2014, Clint Eastwood delivered the Iraq war veteran biopic American Sniper.