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