Adm. Mike Mullen responds to a reporter's question. Chairman of the Joint Chiefs of Staff Adm. Mike Mullen responds to a reporter's question during a Pentagon press briefing with Secretary of Defense Leon E. Panetta on Aug. 4, 2011. It was Panetta's first press briefing since becoming secretary. SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 189094-K-DKL54-484.jpg Photo Gallery