Chief of the Australian Defense Force Air Chief Marshal Angus Houston and Governor of Victoria David de Kretser admire the Officer of the Order of Australia presented to Chairman of the Joint Chiefs of Staff Adm. Mike Mullen in Melbourne, Australia, on Nov. 7, 2010. Mullen is visiting Australia participating in the annual U.S.-Australia defense ministerials with Secretary of Defense Robert M. Gates and Secretary of State Hillary Rodham Clinton.