President Bush on Thursday dedicated the Pentagon Memorial honoring the 184 people who were killed in the terrorist attack on the building on Sept. 11, 2001.

“On one of the darkest days in American history, we saw [some of] the greatest acts in American history,” he said, referring to the heroic efforts from first-responders in the aftermath. “Future generations will … learn that freedom prevailed. We can be optimistic about the future. That day of peace will come.”