William Bratton

William Joseph Bratton CBE is an American law enforcement officer and businessman who served two terms as the New York City Police Commissioner. He previously served as the Commissioner of the Boston Police Department (BPD) (1993–1994) and Chief of the Los Angeles Police Department (LAPD) (2002–2009). He is the only person to have led the police departments of the United States' two largest cities – New York and Los Angeles.