The plenary session of the 42nd annual Republic of Korea - U.S. Security Consultative Meeting gets underway in the Pentagon on Oct. 8, 2010. Participants include Assistant Secretary of Defense for Asian-Pacific Security Affairs Chip Gregson (left), Commander of U.S. Pacific Command Adm. Robert Willare, Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, Secretary of Defense Robert M. Gates, Under Secretary of Defense for Policy Michele Flournoy, Commander of United Nations Command, Combined Forces Command and U.S. Forces Korea Gen. Walter L. Sharp and Principal Deputy Assistant Secretary of State for East Asian and Pacific Affairs Joe Donovan.