Second Anniversary of Bin Laden's Death

Crowds gather outside the White House early May 2, 2011, to celebrate after President Barack Obama announced the death of Osama bin Laden. 

A large crowd reacts to the news of Osama Bin Laden's death near ground zero in New York during the early morning hours of May 2, 2011. 

United States military troops watch breaking news that Osama bin Laden had been killed, at the USO at Kandahar Airfield, southern Afghanistan, May 2, 2011. 

President Barack Obama reads a statement on the death of Osama bin Laden from the East Room of the White House, May 1, 2011. 

President Barack Obama and Vice President Joe Biden, along with with members of the national security team, receive an update on the mission against Osama bin Laden in the Situation Room of the White House, May 1, 2011. (AP/The White House)

Activists from Muthahida Shehri Mahaz burn a banner depicting U.S. President Barack Obama during a rally to condemn the killing of al-Qaida leader Osama bin Laden, in Multan, Pakistan, May 8, 2011. 

This May 2, 2011 file photo shows a tractor trolley carrying the wreckage of a helicopter that crashed next to the wall of Osama bin Laden's compound, Abbottabad, Pakistan. 

Osama bin Laden's compound in Abbottabad, Pakistan shortly after the raid that killed the al-Qaida leader.