President Barack Obama, Secretary of State Hillary Clinton, former President Bill Clinton, former U.N. Secretary General Kofi Annan and Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, share a laugh during the memorial service for Ambassador Richard C. Holbrooke at the John F. Kennedy Center for Performing Arts in Washington, D.C., Jan. 14, 2011. President Barack Obama, Secretary of State Hillary Clinton, former President Bill Clinton, former U.N. Secretary General Kofi Annan and Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, share a laugh during the memorial service for Ambassador Richard C. Holbrooke at the John F. Kennedy Center for Performing Arts in Washington, D.C., Jan. 14, 2011. SHARE: Download: Full Size (1.65 MB) Tags: Photo Essays Credit: VIRIN: 329598-B-EXM30-813.jpg Photo Gallery