MEMORIAL ADDRESS President Barack Obama addresses the audience gathered to mark the eighth anniversary of the 9/11 terrorist attacks at a remembrance ceremony at the Pentagon Memorial, Sept. 11, 2009. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, right, also offered remarks. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 903380-G-GKI26-460.jpg Photo Gallery