Adm. Mike Mullen addresses soldiers at Chaklala Air Base. Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, U.S. Navy, addresses soldiers assigned to 1st Battalion, 52nd Aviation Regiment at Chaklala Air Base in Islamabad, Pakistan, on Dec.15, 2010. The aviation unit is returning to Alaska after completing a five-month tour in support of the humanitarian relief effort to flood-stricken Pakistan. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 168147-Q-XTT49-662.jpg Photo Gallery