Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, U.S. Navy, addresses soldiers assigned to the 1st Armored Division in Baghdad, Iraq, on Dec. 13, 2010. Mullen and his wife Deborah are hosting the holiday tour featuring Robin Williams, Lewis Black, Kathleen Madigan, Tour de France champion Lance Armstrong and country music artist Kix Brooks of Brooks and Dunn touring the Central Command area of responsibility.