Bob Sullivan / msnbc.com
Crowds rejoice in front of the White House.
By Bob Sullivan, Msnbc.com reporter
Outside the White House, a crowd of thousands gathered, waving U.S. flags, chanting “USA,” singing the national anthem, and a tune familiar to sports fans -- "na, na, na, na, hey, hey, good-bye."
The crowd was mostly college students, but as the news spread, nearby D.C. residents jammed the plaza just north of the White House.
Among the crowd was Monica Lawson, whose sister Cecelia Lawson Richards died on 9/11 in the Pentagon. She was watching TV with her daughter Courtney (below, right) - the victim's niece - when she heard the news. They left their suburban D.C. carried a large portrait of Cecelia to the gates of the White House.
"I was like, what? Then it started to sink in," Courtney said. "I'm happy. Justice was done. But there is more work to do."