Quick Scoop

The “911 incident” usually refers to the **September 11, 2001 attacks (9/11)** in the United States, when four commercial planes were hijacked and used in coordinated terrorist attacks. The attacks killed **2,977 people** and remain the deadliest terrorist attacks in U.S. history.

What happened

On the morning of September 11, 2001, 19 hijackers took control of four passenger aircraft. Two planes struck the Twin Towers in New York City, one hit the Pentagon near Washington, D.C., and the fourth crashed in Pennsylvania after passengers and crew tried to retake the plane.

Why it is remembered

The event changed U.S. security, foreign policy, and airport screening rules, and it is remembered every year as a national tragedy. It also became the defining moment that launched the “War on Terror” era.

Key facts

  • Total deaths: 2,977.
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  • Planes hijacked: 4.
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  • Main targets: the World Trade Center, the Pentagon, and a likely target in Washington, D.C..
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If you meant a different “911 incident” — like an emergency call, a local police case, or a recent news story — tell me the context and I’ll explain that one instead.

TL;DR: “911 incident” most often means the 9/11 terrorist attacks of September 11, 2001.

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