Obama, Hagel, Dempsey Brief Reporters at Pentagon President Barack Obama addresses reporters after meeting with Defense Secretary Chuck Hagel, left, Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, and combatant commanders at the Pentagon, Oct. 8, 2014. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 644669-S-XQA50-686.jpg Photo Gallery