Adm. Mike Mullen responds to a reporter's question. Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, U.S. Navy, responds to a reporter's question during a joint media availability with Secretary of Defense Robert M. Gates in the Pentagon on Jan. 24, 2008. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 492773-N-NUF81-588.jpg Photo Gallery