STXfilms has released the first trailer for 21 Bridges, the crime-thriller starring Black Panther leading man Chadwick Boseman as a police officer in the middle of a city-wide manhunt for a pair of cop killers. Directed by Brian Kirk (Game of Thrones) from a script by Matthew Michael Carnahan (Deepwater Horizon) and Adam Mervis (The Philly Kid), the film re-teams Boseman with Avengers: Infinity War directors Joe and Anthony Russo, who are both producers on the project. Boseman himself also served as producer for the first time. Set in New York City, 21 Bridges takes place in …