> New York City's Tribute In Light to the victims of the 9/11 attacks shines from One World Trade Center into the sky over Manhattan on September 10, 2012 in New York City. The lights were tested a day before ceremonies marking the 11th anniversary of the attacks of September 11, 2001.
< The 9/11 Memorial is viewed during a ceremony for recovery workers and first responders on the 10-year anniversary of the formal end of clean-up operations at Ground Zero on May 30, 2012 in New York City. Thousands of men and women came to Ground Zero following the September 11, 2001 terrorist attacks to help with the recovery effort. Numerous first responders, including police and fire fighters, have subsequently been plagued with health issues many believe are related to the air they breathed in the weeks and months following the attacks. The nine-month recovery effort at the site ended May 30, 2002.
> The hand of Vasanta Velamuri of Avenel, New Jersey, touches the impression of her husband’s name, Sankara Sastry Velamuri, on the rim of the South Pool of the 9/11 memorial during observances held on the 11th anniversary of the attacks, at the site in New York.
A child’s drawing handed over to the British Embassy in New York, three days after the September 11 terrorist attack, is displayed on September 5, 2002 at an art exhibition of September 11 as related children’s art at the International Gallery of Children’s Art in London. The exhibition contains pictures created as cathartic therapy.
Fire service helmets are stacked by a wall during a memorial service at St Paul’s Cathedral in London to commemorate the 10th anniversary. Families of British victims of the attacks attended memorial services in London where around 2,000 people gathered at St Paul’s Cathedral to remember those killed in the 2001 attacks, which included 67 Britons.
The shadow of a visitor to The Imperial War Museum North looks at a Union Jack flag recovered from the wreckage of the 9/11 attack on New York's World Trade Centre on September 8, 2011 in England.
French Interior Minister Manuel Valls signs his name on an unfinished wall on the 24th floor of One World Trade Center after he visited the 9/11 Memorial at Ground Zero on June 29, 2013 in New York.
A sign remembering Catherine Theresa Smith is carried at the 9/11 Memorial in New York as USA marks the 10th anniversary of the September 11 attacks.
Members of the Los Angeles City Fire Department ring a bell 10 times in front of a 23-ton, 22-foot tall steel column that was a part of the lobby of the World Trade Center on the 10th anniversary of the attacks; at Los Angeles in California.