THANKING KARZAI U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, thanks Afghanistan President Hamid Karzai and Defense Minister Abdul Rahim Wardak after touring Arlington National Cemetery's Section 60, Arlington, Va., May 13, 2010. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 351112-Y-ZEL76-133.jpg Photo Gallery