LANGUAGE OF LAUGHTER U.S. Army soldiers laugh at the comedy of Robin Williams during the USO holiday tour show on Camp Victory, Iraq, Dec. 13, 2010. U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and his wife, Deborah, are hosting the holiday tour featuring Williams and comedians Lewis Black and Kathleen Madigan, Tour de France champion Lance Armstrong, and country music artist Kix Brooks in the Central Command area of responsibility. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 554877-X-LOC09-292.jpg Photo Gallery