Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, U.S. Navy, and Afghan Chief of Defense Gen. Bismillah Khan depart the Afghan Presidential Palace in Kabul, Afghanistan, after meeting with President Hamid Karzai discussing the recently announced troop surge on Dec. 14, 2009. Mullen and his wife Deborah are hosting the 2009 USO Holiday Troop Visit with tennis star Anna Kournikova, comedian Dave Attell, tennis coach Nicholas Bollettiere and musician Billy Ray Cyrus visiting troops in Afghanistan, Iraq and Germany.