attention for roll call. at post 67. >> reporter: in a department accused of racial profiling, nearly half the department is comprised of minorities. >> that's a special post. it's going to be in retaliation for a shooting. looking for a dark nissan sedan. we'll get you further information on that. >> reporter: officer calhoun and other new police officers are put on alert. >> understand your assignment, all right? >> yes, sir. >> fall out. >> reporter: doesn't in bed-stuy. >> if you fit a description, you fit a description. there's no way around that. we have to stop the bad guys. that's just how it is. me and my peers, we're out here all day, all night just trying to make sure everyone's safe. >> reporter: why did you want to become a cop? >> my father was a police