It is difficult to second-guess the decision of the grand jury, which had nine white members and three African-Americans. Its members listened to 70 hours of testimony and deliberated for two days, poring over physical evidence and parsing conflicting eye-witness accounts. According to transcripts released by Mr. McCulloch, witnesses offered a wide range of testimony question of whether Mr. Brown was attempting to surrender or charge when Mr. Wilson fired the fatal shots. Mr. McCulloch said some whose eyewitness accounts of the event were initially most damning of the officer changed their stories after they were contradicted by forensic evidence. Most fundamentally, though, police officers are given wide latitude to use deadly force, and the bar for an indictment, much less a conviction, of an officer in such a case is high. The old saying that a prosecutor could get a grand jury could indict a ham sandwich doesn't necessarily hold true when the case revolves around a police shooting.