People celebrate outside the ABC studio in New York's Times Square as news of Osama bin Laden's death is announced on the ticker. (AP Photo/Mary Altaffer)
A tourist poses for a picture with a poster showing the Statue of Liberty holding the head of bin Laden at ground zero in New York. (AP Photo/Seth Wenig)
A crowd reacts to the news of bin Laden's death at the corner of Church and Vesey Sts in New York. (AP Photo/Jason DeCrow)
US President Barack Obama shakes hands with Admiral Mike Mullen, Chairman of the Joint Chiefs of Staff, in the White House after his statement detailing the mission against bin Laden. (AP Photo/The White House, Pete Souza)
Darlene Zaragoza, the banquet manager at the Summit Restaurant in Racine, Wisconsin, shows the restaurant's sign celebrating the death of bin Laden. (AP Photo/Journal Times, Gregory Shaver)
Crowds celebrate on Pennsylvania Avenue in front of the White House in Washington. (AP Photo/Charles Dharapak)
A man buys copies of newspapers in New York's Financial District featuring headlines of the death of bin Laden. (AP Photo/Richard Drew)
Los Angeles Angels players pause for a moment of silence before facing the Boston Red Sox in a baseball game in Boston on Monday, to honour those killed in the September 11, 2001 attacks. (AP Photo/Charles Krupa)
Sisters Carie, left, and Danielle Lemack, whose mother died on Flight 11 from Logan Airport on September 11, 2001, grieve at a Boston memorial at an event held in the wake of news of the death of bin Laden. (AP Photo/Elise Amendola)
Crowds celebrate on Pennsylvania Avenue in front of the White House in Washington. (AP Photo/Charles Dharapak)