Four hijacked planes, ninety-one minutes, and the day that ended the post-Cold-War decade
Also known as 9/11 · September 11 · WTC attacks · Nine-eleven
Hero image: U.S. National Park Service — view of the burning WTC from Liberty Island, morning of September 11, 2001. Public domain.
In short
On the morning of September 11, 2001, nineteen hijackers seized four commercial jets in the northeastern United States, flew two into the World Trade Center towers in New York and one into the Pentagon, and crashed the fourth in a Pennsylvania field after passengers fought back. 2,977 people were killed. The decade that followed was reorganized around the response.
The five-minute version
At 08:46:40 EDT on September 11, 2001, American Airlines Flight 11 — a Boeing 767 that had departed Boston for Los Angeles — was flown into the 93rd through 99th floors of the North Tower of the World Trade Center. Seventeen minutes later, at 09:03:02, United Airlines Flight 175 — also Boston-LAX — struck the South Tower between the 77th and 85th floors. The second impact was televised live; the world watched in real time as a terrorist attack escalated from accident to coordinated act.
Flights had been delayed, transponders disabled. Mohamed Atta, the lead hijacker on Flight 11, had passed through Portland, Maine, that morning. The plan was Khalid Sheikh Mohammed's, the operation was funded by al-Qaeda, the order was Osama bin Laden's. Nineteen hijackers — fifteen from Saudi Arabia, two from the UAE, one from Egypt, one from Lebanon — boarded four planes that morning. Two more crashed before noon. At 09:37:46, American Airlines Flight 77 hit the western face of the Pentagon. At 10:03:11, United Airlines Flight 93 crashed in a field near Shanksville, Pennsylvania, after passengers stormed the cockpit.
The South Tower collapsed first, at 09:58:59. Fifty-six minutes after impact, the structural steel had softened past its yield strength; the floors above the burning zone pancaked down. The North Tower fell at 10:28:22, 102 minutes after impact. Dust covered Lower Manhattan in a layer six inches thick. 2,977 people died on the day, not counting the 19 hijackers: 2,753 at the World Trade Center, 184 at the Pentagon, and 40 on Flight 93. Approximately 3,000 children lost a parent. Over 6,000 were injured. First-responder cancer deaths and 9/11-related illness deaths have since exceeded the day-of toll.
U.S. airspace closed at 09:45. President George W. Bush, who had been reading to second-graders in Sarasota, Florida, was airlifted to a SAC base in Nebraska before returning to Washington that night. He addressed the nation at 20:30 EDT: 'These acts of mass murder were intended to frighten our nation into chaos and retreat. But they have failed.' Three days later, Congress authorized the use of military force against those responsible — a 60-word resolution that would underwrite American military operations for the next 20+ years.
The response reshaped the decade. The U.S. invaded Afghanistan on October 7, 2001, beginning what became the longest war in American history. The Patriot Act was signed October 26. The Department of Homeland Security was created in 2002. The Transportation Security Administration was created in 2001. The Guantanamo Bay detention facility opened in 2002. Iraq was invaded in 2003 on a pretext later acknowledged as wrong. Surveillance authorities expanded under FISA. Bin Laden was killed by Navy SEALs in Abbottabad, Pakistan on May 2, 2011 — 3,519 days after the attack. U.S. troops withdrew from Afghanistan in August 2021. The wars cost approximately $8 trillion and roughly 940,000 lives (combined U.S. military, allied military, contractors, and civilians per the Costs of War project). The reorganization of American institutions around terrorism remains in place.
Timeline
08:46:40 EDT. Boeing 767 from Boston, 92 aboard. Hits floors 93–99 of WTC 1 at ~440 mph. Captain John Ogonowski's stuck radio mic transmits Atta's announcement.
09:03:02 EDT. Boeing 767 from Boston, 65 aboard. Live on CNN. First time the world watches a terrorist act in progress on camera.
09:42 EDT. First nationwide ground stop in U.S. aviation history. ≈4,000 aircraft in the air; all are routed to the nearest airport. Many divert to Gander, Newfoundland.
09:37:46 EDT. Boeing 757 from Dulles, 64 aboard. 125 killed in the building (the construction crew was in the renovated wedge).
10:03:11 EDT. Boeing 757 from Newark, 44 aboard. Cockpit voice recorder captures the passenger revolt. Target was likely the U.S. Capitol.
09:58:59 EDT. 56 minutes after impact. Structural steel fails; floors pancake. Estimated 600 in the building above the impact zone.
10:28:22 EDT. 102 minutes after impact. Survivors above the impact zone: 0. The dust cloud reaches Lower Manhattan rooftops.
Congress passes AUMF — 98-0 in the Senate, 420-1 in the House. Rep. Barbara Lee casts the lone no vote. The 60-word resolution still underwrites U.S. counterterrorism operations.
Operation Enduring Freedom begins. Air strikes against Taliban and al-Qaeda targets. Kabul falls November 13.
George W. Bush signs P.L. 107-56. Expands surveillance, search, and detention authorities. Becomes the legal scaffolding of two decades of counterterrorism.
00:43 PKT. SEAL Team Six raid on a compound in Pakistan. 3,519 days after the attack.
23:59 EDT. Twenty years minus 38 days of war. The Taliban — driven from power within months of October 7, 2001 — is back in Kabul.
By the numbers
Hijackers
0 (15 Saudi, 2 UAE, 1 Egypt, 1 Lebanon)
Hijacked aircraft
0 (AA 11, UA 175, AA 77, UA 93)
First impact
0:46:40 EDT · WTC North
Second impact
0:03:02 EDT · WTC South
Pentagon impact
0:37:46 EDT
Flight 93 crash
0:03:11 EDT · Shanksville, PA
South Tower collapse
0:58:59 EDT · 56 min after impact
North Tower collapse
0:28:22 EDT · 102 min after impact
Killed
0 (excl. 19 hijackers)
Media coverage
5 pieces, ranked by how much they shaped the discourse.
The New York Times
Newspaper · US · Sep 12, 2001
Hijackers rammed jetliners into each of New York's World Trade Center towers yesterday, toppling both in a hellish storm of ash, glass, smoke and leaping victims, while a third jetliner crashed into the Pentagon in Virginia.
CNN
TV · US
CNN broke into regular programming at 08:49 EDT with footage of smoke from the North Tower. By 09:03 the second impact was on live air. The network aired commercial-free for 93 consecutive hours.
BBC News
TV · UK
Hijacked airliners have crashed into the World Trade Center in New York and the Pentagon in Washington in apparently coordinated attacks that have stunned the United States and the world.
Le Monde
Newspaper · France
frLe 11 septembre 2001 est une date qu'oubliera difficilement le siècle qui commence. Nous sommes tous Américains — comme dans les heures les plus graves de notre propre histoire.September 11, 2001 is a date that the century just beginning will not easily forget. We are all Americans — as in the most grave hours of our own history.
Bild
Newspaper · Germany
deTausende Tote, ein Land im Schock, die freie Welt erschüttert. Was am 11. September geschah, war ein Angriff nicht nur auf Amerika, sondern auf alles, was die westliche Demokratie ausmacht.Thousands dead, a country in shock, the free world shaken. What happened on September 11 was an attack not only on America but on everything that constitutes Western democracy.
People's voice
Quotes drawn from contemporaneous newspapers, blogs, comment threads, interviews, and published opinion polls — ranked by how much each line shaped the discourse around the event.
Sentiment mix · 8 voices
“Are you guys ready? Let's roll.”
“America is under attack.”
“However difficult this vote may be, some of us must urge the use of restraint. Our country is in a state of mourning. Some of us must say, let's step back for a moment. Let's just pause, just for a minute, and think through the implications of our actions today.”
“I can hear you. The rest of the world hears you. And the people — and the people who knocked these buildings down will hear all of us soon.”
“We calculated in advance the number of casualties from the enemy, who would be killed based on the position of the tower. We calculated that the floors that would be hit would be three or four floors.”
“Oh my God — the tower has come down. The tower has come down. We are running.”
“deDiese Tat war eine Kriegserklärung gegen die zivilisierte Welt. Die Bundesrepublik Deutschland steht in dieser schwersten Stunde uneingeschränkt an der Seite der Vereinigten Staaten.This act was a declaration of war against the civilized world. The Federal Republic of Germany stands, in this gravest hour, in unconditional solidarity with the United States.”
“I'm okay, I'm just going to be a little late.”
Gallery
Captured before it changed
Wayback Machine snapshots of the pages people actually loaded that day. Click any card to open the archive at full size.
Where, exactly
The world it landed in
Drops of Jupiter — Train
Grammy winner; ambient pop background to a year that abruptly stopped being light.
The Rising — Bruce Springsteen
Released July 30, 2002 — Springsteen's response album. The title track was written for a New Jersey firefighter killed in the towers.
America the Beautiful (Concert for New York City) — Various — Madison Square Garden, Oct 20, 2001
Benefit concert organized by Paul McCartney 39 days after the attacks. Watched live by 60M+ Americans.
United 93 (2006)
Paul Greengrass's near-documentary reconstruction of Flight 93. Released to controversy about whether it was 'too soon'; later canonized as the definitive cinematic treatment.
World Trade Center (2006)
Oliver Stone's film about two Port Authority police officers trapped in the rubble.
Fahrenheit 9/11 (2004)
Michael Moore's documentary. Won the Palme d'Or; became the highest-grossing documentary in U.S. history.
Friends (Season 8)
Re-shot the season 8 premiere days after 9/11 — the original cut involved a bomb-on-a-plane joke that became unusable.
The West Wing — 'Isaac and Ishmael'
Aaron Sorkin wrote a special standalone episode about a school lockdown during a terror scare, aired Oct 3, 2001 — three weeks after the attacks.
Same week, elsewhere
Late 2001 was an inflection point in U.S. culture: irony was declared 'dead' (it wasn't), the country invaded one and then a second country, and the post-Cold-War 'end of history' confidence of the 1990s evaporated. The decade that followed reorganized around the response.
Then & now
U.S. defense spending
$314B (2001)
2001
$842B (2024)
2024
Roughly doubled in real terms across two decades.
TSA budget
$0 (agency didn't exist)
2001
$11.8B / 60,000 employees
2024
TSA was created by the Aviation and Transportation Security Act, Nov 19, 2001.
U.S. citizens killed by terrorism on U.S. soil per year (avg)
≈8 (1990s avg, excluding 9/11)
2000
≈15 (2010s avg, excluding the largest single events)
2024
Cost of post-9/11 wars (Costs of War project, est.)
$0
2001
≈$8 trillion
2023
U.S. troops in Afghanistan
0 (Oct 6, 2001)
2001
0 (Aug 31, 2021 — full withdrawal)
2021
Peaked at 100,000 in 2010. The republic raised in 2004 fell within months of withdrawal.
Impact
The September 11 attacks ended the 1990s unipolar moment. The American response — two wars, the Patriot Act, DHS, TSA, Guantanamo, expanded surveillance — reshaped the relationship between U.S. citizens, their government, and the rest of the world. The republic the U.S. tried to build in Afghanistan fell within weeks of the August 2021 withdrawal. The wars cost roughly $8 trillion and about 940,000 lives. The institutional reorganization remains in place.
Threads pulled by this event
U.S.-led invasion of Afghanistan starts October 7, 2001. Becomes the longest war in U.S. history; ends August 30, 2021 with the Taliban back in power.
Expands surveillance, search, and detention authorities. Becomes the legal scaffolding of two decades of counterterrorism.
Aviation and Transportation Security Act of November 19, 2001 federalizes airport screeners. Shoe removal, liquid limits, and body scanners follow.
Largest reorganization of the U.S. federal government since 1947 — 22 agencies merged. 240,000 employees by 2003.
March 20, 2003. WMD claims that drove the war were later acknowledged as wrong. 4,431 U.S. military deaths; estimated 600,000+ Iraqi civilian deaths.
May 2, 2011. SEAL Team Six raid on a compound in Pakistan, 3,519 days after the attack.
Last U.S. military aircraft leaves Kabul August 30, 2021. The Afghan Republic falls within days. 20 years of war end approximately where they started.
Sources
Every claim on this page traces to a public, license-clean source. We don't asterisk well.
9-11commission.gov
api.gdeltproject.org
hn.algolia.com
web.archive.org
wikidata.org
commons.wikimedia.org
en.wikipedia.org
Classification
How this recap is placed in the corpus graph.
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