JOINT CHIEFS U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and Gen. Han Min-koo, chairman of the South Korean Joint Chiefs of Staff, address the media during a joint press conference in Seoul, Dec. 8, 2010. Mullen traveled to South Korea to meet with South Korean defense officials and reinforce U.S. commitment to the U.S.-South Korean alliance amid escalating tensions on the peninsula. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 451318-T-MFE25-089.jpg Photo Gallery