EE.UU. conmemora el 10º aniversario del 11-S
U.S. President Barack Obama, first lady Michelle Obama, former president George W. Bush and Mrs. Laura Bush and their children are pictured at the North pool of the National September 11 Memorial during tenth anniversary ceremonies at the World Trade Center site in New York, September 11, 2011. The 9/11 attacks changed life in the United States forever, but 10 years after the devastating hit, New Yorkers have learned to live in a more dangerous world and are ready to move on. REUTERS/David Handschuh/Pool (UNITED STATES)
A memorial pool is seen at the National September 11 Memorial during tenth anniversary ceremonies at the World Trade Center site in New York, September 11, 2011. The 9/11 attacks changed life in the United States forever, but 10 years after the devastating hit, New Yorkers have learned to live in a more dangerous world and are ready to move on. REUTERS/Seth Wenig/Pool (UNITED STATES)
US Army soldiers stand with their heads bowed to commemorate the 10th anniversary of the September 11 attacks on New York and Washington, at a ceremony at Jalalabad army base in Afghanistan on September 11, 2011. A jittery, embattled United States comes together in grief on the 10th anniversary of the 9/11 attacks which killed almost 3,000 people and plunged it into an era of war and bitter internal division. AFP PHOTO / TAUSEEF MUSTAFA