After visits to New York's Ground Zero and a memorial in rural Pennsylvania where Flight 93 went down, President and Michelle Obama continued their solemn remembrance of 9/11 today at the Pentagon, the AP reports. The president lay a wreath at a bench and small pool that memorialize the Pentagon's 184 victims. As a military band played "Amazing Grace," the Obamas mingled with visitors and family members of 9/11 victims. Some wore T-shirts and ribbons with the photos and names of lost loved ones. (More Pentagon stories.)