9/11

Extracted Attributes

• Total Fatalities

  2,977 people

• Number of Hijackers

  19 individuals

• Primary Perpetrator

  al-Qaeda

• Firefighter Fatalities

  343 members

• Estimated Property Damage

  At least $10 billion USD

• Law Enforcement Fatalities

  72 members

• Number of Aircraft Involved

  4 commercial airliners

Timeline

• Nineteen al-Qaeda terrorists hijack four planes; three strike the World Trade Center and Pentagon, while the fourth crashes in Pennsylvania. (Source: Wikipedia)

  2001-09-11

• The Federal Aviation Administration orders a ground stop for all U.S. airspace; Canada launches Operation Yellow Ribbon to assist diverted flights. (Source: Wikipedia)

  2001-09-11

• NATO invokes Article 5 of the North Atlantic Treaty for the first time in its history. (Source: Wikipedia)

  2001-09-12

• Cleanup of the World Trade Center site, known as Ground Zero, is officially completed. (Source: Wikipedia)

  2002-05-01

• The National Commission on Terrorist Attacks Upon the United States (9-11 Commission) is created by congressional legislation. (Source: 9-11 Commission Report)

  2002-11-27

• Osama bin Laden releases a taped statement accepting responsibility for the attacks. (Source: Wikipedia)

  2004-10-29

• Construction begins on One World Trade Center in New York City. (Source: Wikipedia)

  2006-04-27

• Osama bin Laden is killed by U.S. military forces during a raid in Abbottabad, Pakistan. (Source: Wikipedia)

  2011-05-02

• One World Trade Center officially opens to tenants. (Source: Wikipedia)

  2014-11-03

September 11 attacks

The September 11 attacks, colloquially known as 9/11, were a series of coordinated Islamist terrorist suicide attacks perpetrated by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four airliners, then flew one into each of the Twin Towers at the World Trade Center in New York City. The third plane crashed into the Pentagon, the headquarters of the U.S. Department of Defense, in Arlington County, Virginia. The fourth plane crashed in a rural Pennsylvania field during a passenger revolt. In response to the attacks, the United States launched the global war on terror, seeking to eliminate hostile groups deemed terrorist organizations and the governments purported to support them over two decades.Ringleader and hijacker Mohamed Atta flew American Airlines Flight 11 into the North Tower of the World Trade Center complex at 8:46 a.m. At 9:03 a.m., hijacker 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. Hijacker Hani Hanjour flew American Airlines Flight 77 into the Pentagon at 9:37 a.m., causing a partial collapse. United Airlines Flight 93, flown by hijacker Ziad Jarrah, was believed to target either the United States Capitol or the White House. Alerted to the previous attacks, the passengers revolted and the hijackers crashed the aircraft into a field near Shanksville, Pennsylvania, at 10:03 a.m. The Federal Aviation Administration ordered a ground stop for all traffic in U.S. airspace, requiring all airborne aircraft to return to their point of origin or divert to Canada. The actions undertaken in Canada to support incoming aircraft and their occupants were collectively titled Operation Yellow Ribbon. That evening, the Central Intelligence Agency informed President George W. Bush that its Counterterrorism Center had identified the attacks as having been the work of al-Qaeda under Osama bin Laden. The United States responded by launching the war on terror and invading Afghanistan. NATO's invocation of Article 5 of the North Atlantic Treaty—its only usage to date—called upon allies to fight al-Qaeda. As U.S. and allied invasion forces swept through Afghanistan, bin Laden eluded them. He denied any involvement until 2004, when excerpts of a taped statement in which he accepted responsibility for the attacks were released. Al-Qaeda's cited motivations included U.S. support of Israel, the presence of U.S. military bases in Saudi Arabia and sanctions against Iraq. The nearly decade-long manhunt for bin Laden concluded in May 2011, when he was killed during a U.S. military raid in Abbottabad, Pakistan. The war in Afghanistan continued for another eight years. The attacks killed 2,977 people, injured thousands more, and gave rise to long-term health consequences, while causing at least US$10 billion in infrastructure and property damage. It remains the deadliest terrorist attack in history, as well as the deadliest incident for firefighters and law enforcement personnel in American history, killing 343 and 72 members, respectively. The crashes of Flight 11 and Flight 175 were the deadliest aviation disasters of all time, and the collision of Flight 77 with the Pentagon resulted in the fourth-highest number of ground fatalities in a plane crash in history. The destruction of the World Trade Center and its environs seriously harmed the U.S. economy and induced global market shocks. Many other countries strengthened anti-terrorism legislation and expanded their powers of law enforcement and intelligence agencies. The total number of deaths caused by the attacks, combined with the death tolls from the conflicts they directly incited, has been estimated by the Costs of War Project to be over 4.5 million. Cleanup of the World Trade Center site (colloquially known as "Ground Zero") was completed in May 2002, while the Pentagon was repaired within a year. After delays in the design of a replacement complex, six new buildings were planned to replace the lost towers at the World Trade Center site, along with a museum and memorial dedicated to those who were killed or injured in the attacks. The tallest building, One World Trade Center, began construction in 2006, and opened in 2014. Memorials to the attacks include the National September 11 Memorial & Museum in New York City, the Pentagon Memorial in Arlington County, Virginia, and the Flight 93 National Memorial at the Pennsylvania crash site.

Web Search Results

• September 11 attacks - Wikipedia

  The September 11 attacks, colloquially known as 9/11, were a series of coordinated Islamist terrorist suicide attacks perpetrated by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four airliners, then flew one into each of the Twin Towers at the World Trade Center "World Trade Center (1973–2001)") in New York City. The third plane crashed into the Pentagon, the headquarters of the U.S. Department of Defense, in Arlington County, Virginia. The fourth plane crashed in a rural Pennsylvania field during a passenger revolt. In response to the attacks, the United States launched the global war on terror, seeking to eliminate hostile groups deemed terrorist organizations and the governments purported to support them over two decades. | v t e al-Qaeda attacks | [...] architect of 9/11, felt towards the U.S. had stemmed from his "violent disagreement with U.S. foreign policy favoring Israel". [...] After 9/11, bin Laden maintained that women and children were not targeted in the attack—rather, symbols of America's "economic and military power". In December 2001, a video of bin Laden was released, in which he did not admit responsibility for 9/11, but said:

• 9/11 FAQs | National September 11 Memorial & Museum

  Was this information helpful? Yes|No ## What happened on 9/11? “9/11” is shorthand for four coordinated terrorist attacks carried out by al-Qaeda, an Islamist extremist group, that occurred on the morning of September 11, 2001. [...] Nineteen terrorists from al-Qaeda hijacked four commercial airplanes, deliberately crashing two of the planes into the upper floors of the North and South Towers of the World Trade Center complex and a third plane into the Pentagon in Arlington, Virginia. The Twin Towers ultimately collapsed because of the damage sustained from the impacts and the resulting fires. After learning about the other attacks, passengers on the fourth hijacked plane, Flight 93, fought back, and the plane was crashed into an empty field in western Pennsylvania about 20 minutes by air from Washington, D.C. The attacks killed 2,977 people from 90 nations: 2,753 people were killed in New York; 184 people were killed at the Pentagon; and 40 people were killed on Flight 93. Was this information helpful? Yes|No [...] The Memorial Plaza surrounds two enormous reflecting pools set within the footprints of the North and South Towers. This is where the towers used to stand. The pools feature 30-foot waterfalls—the largest man-made waterfalls in North America. The water cascades into reflecting pools, finally disappearing into the center voids. The names of people who were killed in the 9/11 attacks in New York, at the Pentagon, and on Flight 93, as well as in the 1993 bombing at the WTC, are etched in bronze around the edges of the pools.

• What Were the 9/11 Terrorist Attacks? | Imperial War Museums

  ## Legacy 9/11 was a direct attack on the very heart of the US mainland, an event never experienced as directly by Americans before. But it also had catastrophic long-term consequences across the globe. More than 90 countries lost citizens in the attacks including 67 individuals from the UK. The events on 9/11 led directly to war in Afghanistan, to the US declaration of the ‘War on Terror’ and subsequently later to the invasion of Iraq. Both countries are still riven with conflict today. The effects of 9/11 were also felt closer to home as many governments, including in the UK, began to introduce new anti-terror legislation to combat the perceived threat from international terrorism. It was a historic day that changed the world and its legacy continues to be complex and ongoing.

• National Commission on Terrorist Attacks Upon the United States

  | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- | | About the Commission | Report | Hearings | Staff Statements | Press | Archive | For Families The National Commission on Terrorist Attacks Upon the United States (also known as the 9-11 Commission), an independent, bipartisan commission created by congressional legislation and the signature of President George W. Bush in late 2002, is chartered to prepare a full and complete account of the circumstances surrounding the September 11, 2001 [...] of the circumstances surrounding the September 11, 2001 terrorist attacks, including preparedness for and the immediate response to the attacks. The Commission is also mandated to provide recommendations designed to guard against future attacks. The Commission has released its final report, available below in PDF format. The report is also available in bookstores nationwide and from the Government Printing Office. Frequently Asked Questions about the report are answered on this site. | 9-11 Commission Report | | Public Statement by the Chair and Vice Chair Regarding the Report | PDF, 36 KB | | Executive Summary | PDF, 372 KB | HTML, 64 KB | | | | | Complete 9/11 Commission Report | | PDF, 7.4 MB | | Report by Section | | Contents, List of Illustrations and Tables, Members, and

• 9/11: causes and lingering consequences - The Ohio State University

  # 9/11: causes and lingering consequences Ohio State's Peter Hahn takes a close look at the causes and legacy of the 9/11 attacks An illustration of a red silhouette of a firefighter with the New York City skyline outlined in the backdrop. The background color is light blue. The images from that day still haunt us. The Twin Towers plummeting to the ground, one following the other, smoke snaking through streets, billowing for blocks, fear and confusion spreading like ashes across the country. We know now what we didn’t know that day: that the terrorist attack had been building for more than a decade. And that it would change our country, irreparably, forever. [...] Here, Peter Hahn, a professor of history and dean of arts and humanities at Ohio State, discusses the causes — and lingering consequences — of 9/11. ## Our research community The Ohio State UniversityColumbus, OH If you have a disability and experience difficulty accessing this content, please contact us . © 2025 The Ohio State University Page maintained by Office of Marketing and Communications

• Instance Of

  Q4167410