Live stream: Obama at Ground Zero

Barack Obama
President Barack Obama waves as he steps off Air Force One at John F. Kennedy International Airport in New York, Thursday, May 5, 2011, en route to Ground Zero and meet with first responders and family members of victims of the Sept. 11, 2001 attacks after he announced Sunday that Osama bin Laden had been killed by U.S. forces.
AP Photo/Charles Dharapak