A boy plays with a tennis ball in front of Osama bin Laden's compound in Abbottabad in this May 5, 2011 file picture. Osama bin Laden was killed almost a year ago, on May 2, 2011, by a United States special operations military unit in a raid on his compound in Abbottabad. REUTERS/Akhtar Soomro/Files (PAKISTAN - Tags: SOCIETY) ATTENTION EDITORS PICTURE 25 OF 25 FOR PACKAGE 'ABBOTTABAD - A YEAR AFTER BIN LADEN'