2: Planes flew into the World Trade Center in New York in the attack orchestrated by al-Qaida leader Osama bin Laden.
4: Planes were hijacked by terrorists.
14: Years ago it happened.
19: Terrorists hijacked the planes.
23: NYPD officers were killed.
40: People died near Shanksville, Pennsylvania, when one plane crashed there.
115: Nations had citizens killed in the attacks.
184: People were killed at the Pentagon in Washington, D.C., when one of the planes struck there.
343: Firefighters and paramedics were killed.
2,753: People were killed in New York when the twin towers were hit.
2,977: Innocent people were killed in all.
3,051: Children are estimated to have lost a parent in the attacks.
1.8 million: Tons of debris was removed in New York after the attacks.
3.1 million: Hours of labor were required to clean up the debris at ground zero.
20 million: People have visited the Sept. 11 memorial in New York since it opened in 2011.
600 million: Estimated dollars were required for the cleanup.
Infinite: The heartache and mourning that resulted from that fateful day.
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