EE.UU. conmemora el 10º aniversario del 11-S
A guest holds the program for ceremonies in honor of the victims of the attack on the Pentagon during ceremonies marking the 10th anniversary of the 9/11 attacks on the Pentagon, in Washington September 11, 2011. REUTERS/Molly Riley (UNITED STATES - Tags: ANNIVERSARY DISASTER)
Robert Peraza, who lost his son Robert David Peraza, pauses at his son's name at the North Pool of the 9/11 Memorial during tenth anniversary ceremonies at the site of the World Trade Center 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. REUTERSJustin Lane/Pool (UNITED STATES - Tags: ANNIVERSARY DISASTER TPX IMAGES OF THE DAY)
New York police, firefighters and Port Authority Police line up at one of the entrances of 9/11 Memorial Plaza before the 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/Chip Somodevilla/Pool (UNITED STATES)