Adm. Mike Mullen opens the USO holiday troop visit to Al-Asad Air base. Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, U.S. Navy, opens the USO holiday troop visit to Al-Asad Air base in Iraq on Dec. 19, 2009. Mullen and his wife Deborah are hosting the tour with tennis star Anna Kournikova, comedian Dave Attell, tennis coach Nicholas Bollettiere and musician Billy Ray Cyrus visiting troops in Afghanistan, Iraq and Germany. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 249770-D-WIF18-691.jpg Photo Gallery