Biography: William J.  Bratton

William J. Bratton was New York City police commissioner from 1994-1996. He also served as chief of the New York City Transit Police from 1990-1992 and then as Boston’s police commissioner before returning to New York in 1994. Bratton began his career as a beat cop in Boston in 1970. In 2002, he moved to Los Angeles as head of its police department.