Adm. Mike Mullen answers questions during an all-hands call. Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, U.S. Navy, answers questions during an all-hands call with soldiers assigned to Fort Hood, Texas, on April 16, 2009. Mullen is on a four-day tour of installations visiting service members in the Lone Star state. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 245721-U-GAI89-055.jpg Photo Gallery