DEFENSE LEADERS Navy Adm. Mike Mullen, left, chairman of the Joint Chiefs of Staff, speaks with Army Gen. David H. Petraeus, commander, U.S. Central Command, at the 2nd Annual Gulf States Chiefs of Defense Conference in Washington, D.C., June 22, 2009. The conference, hosted by the U.S. Central Command, brings together senior defense officials to foster regional military-to-military cooperation and increase high-level dialogue. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 469660-G-KBO21-490.jpg Photo Gallery