The United States is marking the 15th anniversary of the September 11th terrorist attacks, when al-Qaida terrorists hijacked four planes and flew them into the World Trade Center in New York and the Pentagon near Washington, while one crashed in rural Pennsylvania.
US Marks 15th Anniversary of 9/11 Attacks
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Roses are placed on names on the memorial during the ceremony marking the 15th anniversary of the attacks on the World Trade Center at The National September 11 Memorial and Museum in Lower Manhattan in New York City, Sept. 11, 2016.
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President Barack Obama places a wreath during a ceremony marking the 15th anniversary of the 9/11 attacks at the Pentagon in Washington, Sept. 11, 2016.
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People watch as President Barack Obama, Defense Secretary Ash Carter and Joint Chiefs Chair Gen. Joseph Dunford take part in a ceremony marking the 15th anniversary of the 9/11 attacks at the Pentagon in Washington, Sept. 11, 2016.
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An FDNY firefighter stands as part of an honor guard at the FDNY Memorial Wall near the World Trade Center, Sept. 11, 2016, on the 15th anniversary of the attacks on the World Trade Center in New York.