9/11 Commemorations In New York And Beyond

New York Fire Department Battalion Commander Tom Currao raises a flag outside the World Trade Center construction site at the 9/11 Memorial Visitors Center in New York.

Families line up against the wall of the South Memorial pool during 10th anniversary ceremonies at the site of the World Trade Center in New York.

U.S. President Barack Obama, First Lady Michelle Obama, and ex-President George W. Bush visit the North Memorial Pond on the 10th anniversary of the 9/11 attacks at the National September 11 Memorial at Ground Zero in New York City.

President Barack Obama, First Lady Michelle Obama, and ex-President George W. Bush visit the North Memorial Pond as they arrive for a commemoration ceremony.

New York Police Department officers check bags during the morning commute at Grand Central Terminal in New York City.

The September 11 attacks are commemorated at Manas Transit Center near Bishkek, Kyrgyzstan.

Family members who lost loved ones gather at the North pool of the 9/11 Memorial during 10th anniversary ceremonies at the site of the World Trade Center in New York.

President Barack Obama, his wife Michelle Obama, ex-President George W. Bush, and his wife Laura Bush observe a moment of silence at the time the first hijacked airliner crashed into the North Tower in 2001.

A U.S. flag recovered from the 9/11 attacks is displayed by New York City Police officers and firefighters during the ceremony marking the 10th anniversary of the terrorist attack.

Roses are stuck in the name of Richard Joseph Klares, who was killed in the attack on the World Trade Center, at the National 9/11 Memorial site in New York.

Relatives of 9/11 attack victims gather next to the memorial pool during ceremonies marking the 10th anniversary of the World Trade Center attacks in New York.

People walk along construction fences surrounding the 9/11 Memorial site in New York.

Iranians hold a candlelight vigil in Tehran for the victims of the 9/11 attacks.