A day that changed the world: US marks 15th anniversary of the 9/11 attacks

Roses are left in front of One World Trade Center at the national 9/11 Memorial in advance of the 15th anniversary of the 9/11 attacks. Getty Images

Roses are left in front of One World Trade Center at the national 9/11 Memorial in advance of the 15th anniversary of the 9/11 attacks. Getty Images

Students of the Pepperdine University placed around 3,000 flags at their campus in Malibu, California in tribute to the nearly 3,000 victims lost in the September attacks. Getty Images

Students of the Pepperdine University placed around 3,000 flags at their campus in Malibu, California in tribute to the nearly 3,000 victims lost in the September attacks. Getty Images

Midshipmen place 2,996 mini American flags on Stribling walk, to represent those lost on 9-11, at the U.S. Naval Academy in Annapolis. Getty Images

Midshipmen place 2,996 mini American flags on Stribling walk, to represent those lost on 9-11, at the U.S. Naval Academy in Annapolis. Getty Images

Shanksville : Candles in memory of the passengers and crew of Flight 93, are lit along the Wall of Names at the Flight 93 National Memorial in Shanksville, Pennsylvania

Candles in memory of the passengers and crew of Flight 93, are lit along the Wall of Names at the Flight 93 National Memorial in Shanksville, Pennsylvania. AP

40 passengers and the crew of the hijacked Flight 93 were among the victims of the attacks. AP

40 passengers and the crew of the hijacked Flight 93 were among the victims of the attacks. AP

The Tribute in Light rises above the lower Manhattan skyline in New York a day before the fifteenth anniversary of the attacks. AP

The Tribute in Light rises above the lower Manhattan skyline in New York a day before the fifteenth anniversary of the attacks. AP

The iconic Tribute in Light display consists of 88 eight beams of light forming the shape of the Twin Towers. Getty Images

The iconic Tribute in Light display consists of 88 eight beams of light forming the shape of the Twin Towers. Getty Images


Updated Date: Sep 11, 2016 16:10 PM