GUEST SPEAKER U.S. Navy Adm. Michael G. Mullen, chairman of the Joint Chiefs of Staff, speaks during the Central Command Chief of Defense Conference in St. Petersburg, Fla., Jan. 15, 2008. Defense chiefs from more than 12 Central Asian and Middle Eastern nations of attended the conference. SHARE: Download: Full Size (0.02 MB) Credit: VIRIN: 681566-Y-WBR29-486.jpg Photo Gallery