INFORMAL MOMENT U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, meets with Army Gen. Lee Sang-eui, outgoing South Korean chairman of the Joint Chiefs, during a meeting between U.S. Defense Secretary Robert M. Gates and South Korean National Defense Minister Kim Tae-young in Seoul, South Korea, July 20, 2010. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 109761-W-YVF24-759.jpg Photo Gallery