US military personnel attend a memorial ceremony in honour of the 15th anniversary of the September 11, 2001 attacks on New York and Washington DC, at the International Security Assistance Force (ISAF) headquarters in Kabul on September 11, 2016.
The United States marks the 15th anniversary of the 9/11 attacks on Sunday with solemn services to commemorate the victims of the deadliest terror strikes on US soil, which changed the world forever. It was the first foreign attack on the US mainland in almost two centuries and sparked US-led invasions of Afghanistan (2001) and Iraq (2003, where war rages on more than a decade later.
( WAKIL KOHSAR/AFP/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
US military personnel lower the US flag at a memorial ceremony in honour of the 15th anniversary of the September 11, 2001 attacks on New York and Washington DC, at the International Security Assistance Force (ISAF) headquarters in Kabul on September 11, 2016.
The United States marks the 15th anniversary of the 9/11 attacks on Sunday with solemn services to commemorate the victims of the deadliest terror strikes on US soil, which changed the world forever. It was the first foreign attack on the US mainland in almost two centuries and sparked US-led invasions of Afghanistan (2001) and Iraq (2003, where war rages on more than a decade later.
( WAKIL KOHSAR/AFP/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
General view of the capital on the 15th anniversary on the 9/11 attacks on September 11, 2016 in Washington, DC. (Photo by Mark Wilson/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
Family members gather for the 15th Anniversary of September 11 at the 9/11 Memorial and Museum, on September 11, 2016 in New York. ( BRYAN R. SMITH/AFP/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
A family member sits near the south memorial pool at the 15th Anniversary of September 11 at the 9/11 Memorial and Museum, on September 11, 2016 in New York. / (BRYAN R. SMITH/AFP/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
Roses line the north memorial pool at the 15th Anniversary of September 11 at the 9/11 Memorial and Museum, on September 11, 2016 in New York. / ( BRYAN R. SMITH/AFP/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
US Democratic presidential nominee Hillary Clinton arrives for a memorial service at the National 9/11 Memorial on September 11, 2016 in New York.
The United States on Sunday commemorated the 15th anniversary of the 9/11 attacks. ( BRENDAN SMIALOWSKI/AFP/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
Republican presidential candidate Donald Trump with former New York City Mayor Rudolph Giuliani arrive to the 15th Anniversary of September 11 at the 9/11 Memorial and Museum, on September 11, 2016 in New York.
The United States on Sunday commemorated the 15th anniversary of the 9/11 attacks (BRYAN R. SMITH/AFP/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
A commemoration ceremony is held for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
A commemoration ceremony is held for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
People attend a commemoration ceremony for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
A commemoration ceremony is held for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
People attend a commemoration ceremony for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
People attend a commemoration ceremony for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
Attendees hold photographs of lost family members during the September 11 Commemoration Ceremony at the National September 11 Memorial & Museum on September 11, 2016 in New York City. Hillary Clinton and Donald Trump attended the September 11 Commemoration Ceremony. (Photo by Justin Sullivan/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
Flowers and a card are left members of the public to victims of the 9/11 terroism attacks at the September 11 Memorial Garden on September 11, 2016 in London, England. 2016 marks 15 years since the terrorism attacks on the World Trade Centre buildings in New York City, United States. The September 11 Memorial Garden in Grosvenor Square, London was officially opened on 11 September 2003 and is a focal point in the city for those wishing to pay their respects to victims of the 9/11 terrorism atrocities. (Photo by Chris J Ratcliffe/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
Democratic presidential nominee former Secretary of State Hillary Clinton (2L) leaves the September 11 Commemoration Ceremony at the National September 11 Memorial & Museum on September 11, 2016 in New York City. Hillary Clinton and Donald Trump attended the September 11 Commemoration Ceremony. (Photo by Justin Sullivan/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
A young girl holds her mother during a commemoration ceremony for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
US President Barack Obama attends a ceremony commemorating the September 11, 2001, attacks at the Pentagon in Washington, DC, on September 11, 2016. / (NICHOLAS KAMM/AFP/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
A choir sings as family members, emergency workers and others attend commemoration ceremony for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
People read the names of the victims during a commemoration ceremony for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
A FDNY firefighter attends a commemoration ceremony for the victims of the September 11 terrorist attacks at the National September 11 Memorial and Museum fifteen years after the day on September 11, 2016 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania. (Photo by Spencer Platt/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
US President Barack Obama speaks during a ceremony commemorating the September 11, 2001 attacks, with Defense Secretary Ashton Carter (2nd R) and Joint Chiefs of Staff Gen. Joseph Dunford (R) at the Pentagon in Washington, DC, on September 11, 2016. (NICHOLAS KAMM/AFP/Getty Images)
Nation Remembers 15th Anniversary Of 9/11 Attacks
US President Barack Obama attends a ceremony commemorating the September 11, 2001 attacks at the Pentagon in Washington, DC, on September 11, 2016. / (NICHOLAS KAMM/AFP/Getty Images)
President Obama Attends Remembrance Ceremony For 15th Anniversary Of 9/11 Attacks At The Pentagon
ARLINGTON, VA - SEPTEMBER 11: U.S. President Barack Obama lays a wreath during a ceremony to mark the 15th anniversary of the 9/11 terrorists attacks at the Pentagon Memorial September 11, 2016 in front of the Pentagon in Arlington, Virginia. This year marks the 15th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93.
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People wipe their eyes during a moment of silence during a memorial service at the National 9/11 Memorial September 11, 2016 in New York.
The United States on Sunday commemorated the 15th anniversary of the 9/11 attacks. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
US-ATTACKS-9/11-ANNIVERSARY
People pause for a moment of silence during a memorial service at the National 9/11 Memorial September 11, 2016 in New York.
The United States on Sunday commemorated the 15th anniversary of the 9/11 attacks. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
US-ATTACKS-9/11-ANNIVERSARY
People attend a memorial service at the 9/11 memorial September 11, 2016 in New York.
The United States on Sunday commemorated the 15th anniversary of the 9/11 attacks. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
US-ATTACKS-9/11-ANNIVERSARY
People attend a memorial service at the 9/11 memorial September 11, 2016 in New York.
The United States on Sunday commemorated the 15th anniversary of the 9/11 attacks. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
US-ATTACKS-9/11-ANNIVERSARY
People attend a memorial service at the 9/11 memorial September 11, 2016 in New York.
The United States on Sunday commemorated the 15th anniversary of the 9/11 attacks. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
