The first trailer for Jonah Hill and Miles Teller's new movie, War Dogs, is here, and it already promises a lot of laughs. Based on a true story, the actors play two guys who get way in over their heads as they lowball into a multimillion-dollar military contract. Not only is the film directed by Todd Phillips, the same man who brought you The Hangover, but Bradley Cooper also makes a special cameo. Watch the trailer above before it hits theaters Aug. 19, and then check out what other movies are coming out this year.