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. 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. SHARE: Download: Full Size (8.9 MB) Tags: photo essays Credit: VIRIN: 901125-V-JGI24-707.jpg Photo Gallery