TWO CHAIRMEN U.S. Navy Adm. Mike Mullen, left, chairman of the Joint Chiefs of Staff, meets with Army Gen. Han Min-goo, outgoing South Korean chairman of the Joint Chiefs of Staff, during a visit to Seoul, South Korea, July 20, 2010. Mullen is in South Korea with U.S. Defense Secretary Robert M. Gates and Secretary of State Hillary Rodham Clinton to particpate in counterpart talks underscoring the alliance between the two nations. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 747535-T-DMM03-793.jpg Photo Gallery