The United States is marking the 14th anniversary of the September 11th terrorist attacks on Friday with a series of observances to remember that horrifying day.
US Marks 14th Anniversary of 9/11 Attacks
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1
Low clouds surround the top of the One World Trade Center tower, center left, at sunrise during the 14th anniversary of the terrorist attacks, Sept. 11, 2015.

2
On the 14th anniversary of the attack, a U.S. flag is draped on the side of the Pentagon, Sept. 11, 2015, where the building was attacked on September 11th in 2001.

3
President Barack Obama, first lady Michelle Obama and others observe a moment of silence to mark the 14th anniversary of the 9/11 attacks, on the South Lawn of the White House in Washington, Sept. 11, 2015.

4
Army Sgt. Edwin Morales prays during a ceremony at the World Trade Center site in New York, Sept. 11, 2015.