September 11 attacks
2001 attacks in the United States
The September 11 attacks, colloquially known as 9/11, were a coordinated series of suicide attacks perpetrated by the Islamic terrorist organization al-Qaeda against the United States in 2001. A total of 19 hijackers commandeered four commercial passenger airliners. The first two planes were flown into each of the Twin Towers at the World Trade Center in New York City, while the third plane crashed into the Pentagon, the headquarters of the United States Department of Defense, in Arlington County, Virginia. The fourth plane crashed in a rural field in Pennsylvania during a passenger revolt.
The ringleader, Mohamed Atta, flew American Airlines Flight 11 into the North Tower of the World Trade Center at 8:46 a.m. At 9:03 a.m. Marwan al-Shehhi flew United Airlines Flight 175 into the South Tower. Both collapsed within an hour and forty-two minutes, destroying the remaining five structures in the complex. Hani Hanjour flew American Airlines Flight 77 into the Pentagon at 9:37 a.m., causing a partial collapse. United Airlines Flight 93, hijacked by Ziad Jarrah, was believed to target either the United States Capitol or the White House.
Begin with the source’s own compact description: “September 11 attacks” is 2001 attacks in the United States. The dossier treats that line as a proposition to test through September, attacks and United, not as a finished interpretation.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 22, 2026. The linked authority identifier is Q10806. VIAF identifies the subject as 315679777. The Library of Congress control number is sh2001000147. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2001.
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This entry incorporates text from “September 11 attacks” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.