ANTHEM HONORS President Barack Obama, left, Defense Secretary Chuck Hagel and Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, stand for the national anthem during a remembrance ceremony for victims of the 9/11 attacks on the Pentagon at the Pentagon Memorial, Sept. 11, 2013. The three leaders joined family members of those killed in the terrorist attack for the private ceremony. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 572763-M-MYE11-018.jpg Photo Gallery