Code Blue (2010)

Four childhood friends, who witness murder by the hand of the law. Vow vengeance on all who represent the blue. Their lives are forever changed when one of their own becomes the law. With his loyalty at stake, he must choose between life long friends or the job in which he was sworn to uphold. Contemplating exposure, of a partner who's tactics are worthy of expelling. But knowing the definite repercussion of breaking the blue wall of silence.