Warner Bros. has released the first trailer for Bullet to the Head, the latest from legendary director Walter Hill (The Warriors, 48 Hours). The story centers on the unconventional alliance formed by a hitman (Sylvester Stallone) and a cop (Sung Kang) when both their partners are killed by a common enemy. Take a look at new footage from this action thriller, also starring Jason Momoa, Christian Slater, and Sarah Shahi.