Adm. Mike Mullen, President Barack Obama and Secretary Gates stand for the national anthem during a ceremony at the Pentagon Memorial.
Chairman of the Joint Chiefs of Staff Adm. Mike Mullen (left), President Barack Obama and Secretary of Defense Robert M. Gates (right) stand for the national anthem during a ceremony at the Pentagon Memorial marking the 9th anniversary of the 9/11 terrorist attacks on Sept. 11, 2010. Also attending the ceremony were family members of those who lost their lives in the attack on the Pentagon.