NYPD detectives Christopher Danson (Johnson) and P.K. Highsmith (Jackson) are the baddest and most beloved cops in New York City. They don’t get tattoos, other men get tattoos of them. Two desks over and one back, sit detectives Allen Gamble (Ferrell) and Terry Hoitz (Wahlberg). You’ve seen them in the background of photos of Danson and Highsmith, out of focus and eyes closed. They’re not heroes, they’re “the other guys.” But every cop has his…