REMEMBERING 9/11 President Barack Obama delivers remarks during a ceremony to commemorate the 11th anniversary of the 9/11 terrorist attacks at the Pentagon. Sept. 11, 2012. Defense Secretary Leon E. Panetta and Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, joined Obama. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 662503-W-JHB17-436.jpg Photo Gallery