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As Los Angeles mayor Antonio Villaraigosa (L) looks on, Chief of the Los Angeles Police Department Bill Bratton announces that he will resign from the department to head of a private security firm on August 5, 2009 in Los Angeles, California.

In the 1970s, a young William Bratton was making his way through the Boston police, rapidly reaching the rank of lieutenant and then becoming the youngest-ever Executive Superintendent, that department's second highest post. From there he moved on to head up New York's Police Department, before coming to Los Angeles in 2002 to head up the LAPD. This is his last week in LA. He will soon move back to New York City to take a position with the private international security firm Altegrity, where he'll head up a new division that will consult on security for police departments worldwide.

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