GUEST BOOK U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, signs a guest book during a welcoming ceremony hosted by Gen. Lee Sang-Eui, chairman of the Joint Chiefs of Staff, Republic of Korea Armed Forces, in Seoul, South Korea, Oct. 21, 2009. Mullen is visiting South Korea for the annual military meetings between the two longtime allies. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 901573-J-VNJ54-222.jpg Photo Gallery