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September 11: Attacks, Al-Qaeda and Afghanistan

Examine the September 11, 2001 attacks, al-Qaeda’s preparations, the hijacked flights, intelligence warnings and the emergency response. Explore the people, locations, financial transactions and Afghanistan background described in the records. Follow the timeline and official investigations to examine what happened. The records cover the World Trade Center, Pentagon and Flight 93, together with passengers, crew, emergency responders, preparations and subsequent investigations.

September 11: the attacks, preparations and missed warnings

The September 11, 2001 attacks killed 2,977 people, excluding the hijackers. The records include the aircraft hijackings, passengers and crew, preparations, financial transactions, intelligence warnings, emergency response and subsequent investigations and proceedings.

The attacks and the lives lost

Two hijacked aircraft struck the World Trade Center, one struck the Pentagon, and Flight 93 crashed in Pennsylvania after passengers and crew resisted. The attacks killed 2,977 people, excluding the hijackers.

World Trade Center →Pentagon →Flight 93 — Shanksville →
  1. 9/11 FAQs
  2. September 11, 2001 Timeline

From Afghanistan to the aircraft plot

The Commission traces bin Laden's Afghan-era organizing, the formation of al-Qaeda, its Sudan period and return to Afghanistan. KSM developed the aircraft proposal; bin Laden and Mohammed Atef provided organizational backing. Some planning details derive from detainee reporting.

Osama bin Laden →Khalid Sheikh Mohammed →Mohammed Atef →
  1. 9/11 Commission, chapter 2: Bin Laden and the origins of al-Qaeda · 2004-07-22
  2. 9/11 Commission, chapter 5: The aircraft plot and Hamburg group · 2004-07-22

American contacts and flight training

The cited records document US aid to anti-Soviet Afghan factions. The Commission described bin Laden’s group as having its own support and training. It recorded Ali Mohamed’s US Army service and later work with extremists. Commercial flight schools taught the pilot-hijackers.

Ali Mohamed →Huffman Aviation / Venice →Florida Flight Training Center / Venice →Arizona flight training →
  1. 9/11 Commission, chapter 2: Bin Laden and the origins of al-Qaeda · 2004-07-22
  2. 9/11 Commission, chapter 7: Preparations and the U.S. support network · 2004-07-22

Preparations in the United States

The chronology records entry, school, rental, travel and payment records from 2000 through September 2001 and identifies all 19 hijackers, grouped by flight.

Mohamed Atta →Marwan al-Shehhi →Hani Hanjour →Ziad Jarrah →
  1. 9/11 and Terrorist Travel: staff monograph · 2004-08
  2. 9/11 Commission, chapter 7: Preparations and the U.S. support network · 2004-07-22

The Commission’s financing figures

The Commission estimated plot costs at $400,000–$500,000 and approximately $300,000 in US bank-account inflows. Six Ali transfers totaled $119,500. Approximately $26,000 was returned unused.

Plot financing →Ali Abdul Aziz Ali / Ammar al-Baluchi →Mustafa al-Hawsawi →
  1. Terrorist Financing: staff monograph · 2004-08

Information was available; coordination failed

Oversight findings identify failures to evaluate, investigate and share important information. Hazmi and Mihdhar were not promptly tracked after intelligence identified their travel.

Warnings and response →CIA →FBI →
  1. Review of FBI handling of intelligence: recommendations and conclusions · 2004-11
  2. Staff Statement 2: Identification, Watchlisting, and Tracking · 2004
  3. 9/11 Commission, chapter 8: Warnings and missed opportunities · 2004-07-22

Flight 93 and the emergency response

The Commission describes passengers and crew on Flight 93 learning of the other attacks and counterattacking before the crash. Its account also records the information available to the FAA and military and their responses.

Flight 93 — Shanksville →FAA / air traffic control →NORAD / NEADS →
  1. September 11, 2001 Timeline
  2. Staff Statement 17: Improvising a Homeland Defense · 2004
  3. 9/11 Commission, chapter 1: The four flights and emergency response · 2004-07-22

Subsequent proceedings and health effects

The cited records include Moussaoui’s guilty plea and life sentence, a June 2026 Supreme Court petition in another proceeding, and accounts of long-term health effects.

Zacarias Moussaoui →Khalid Sheikh Mohammed →Long-term health effects →
  1. 9/11 Investigation
  2. Supreme Court docket 25A1072
  3. World Trade Center Health Program statistics

Civil litigation and military proceedings

A November 5, 2025 court order stayed proceedings involving Saudi Arabia pending its interlocutory appeal and recorded an earlier denial of a jurisdictional-dismissal motion. The separately cited reporting describes the military trial setting.

Saudi civil litigation →Khalid Sheikh Mohammed →
  1. Saudi civil litigation — stay pending appeal 03 MDL 1570 (GBD) (SN); associated 1:03-cv-09848, document 747, pp. 1–2, 4–6 · 2025-11-05
  2. Trial for accused mastermind of 9/11 attacks set for June 2028 · 2026-08-27

Rescue on land and water

The emergency response included firefighters, police, building staff and civilian mariners. The Coast Guard’s retrospective interview adds the boatlift, its organizers and landing routes to the account.

Rescue and evacuation →Maritime evacuation →Mike Day →
  1. 9/11 Commission — Heroism and Horror Chapter 9, sections 9.1–9.2 · 2004-07-22
  2. Mike Day recalls the maritime evacuation Interview: call for boats; civilian mariners; dedicated routes · 2026-09-09

People aboard Flight 93

The public memorial entries identify passengers and crew aboard Flight 93. Linked records describe calls and resistance.

Flight 93 passengers and crew →Flight 93 telephone calls →Passenger and crew resistance →
  1. Flight 93 — crew and passengers Public roster; selected entries linked individually below · 2023-07-26
  2. Flight 93 — historical questions and answers Telephone calls, resistance, target and crash

NIST’s WTC 7 investigation

NIST’s engineering findings connect uncontrolled fires, interrupted water supply and the probable failure sequence at Column 79.

World Trade Center 7 →NIST investigation →Column 79 →
  1. NIST WTC 7 investigation — questions and answers Questions 6 and 8–10: probable collapse sequence and water supply

Newly released warnings

The September 2026 release expands the public record of presidential threat reporting. It includes warnings about domestic attacks, hijackings, al-Qaeda’s reach and operational capabilities. The July 1998 brief called its sources highly questionable; the September aircraft warning was later described by the Commission as uncorroborated.

Presidential intelligence briefs →Aircraft attack warning →
  1. CIA: release of 71 presidential intelligence briefs CIA: release of 71 presidential intelligence briefs · 2026-09-11
  2. 9/11 Commission, chapter 11: failures of imagination 9/11 Commission, chapter 11: failures of imagination · 2004-07-22

A financing claim and a different later finding

An October 1999 brief alleged investments in 57 narcotics laboratories. A February 2000 memorandum returned to the drug allegation. The Commission’s 2004 report found no reliable evidence that bin Laden participated in or earned money from drug trafficking.

Drug-financing allegation →Drug-financing review →
  1. CIA intelligence brief: Drug-financing allegation Collection PDF page 43 · 1999-10-18
  2. 9/11 Commission, chapter 5: financing 9/11 Commission, chapter 5: financing · 2004-07-22

Before and after the attacks

The August 6, 2001 brief described threats inside the United States, suspicious activity and ongoing FBI investigations. The September 12 situation report was a post-attack assessment. Its retrospective accounts of preparations are recorded with that publication date.

Determined to strike in the U.S. →First post-attack situation report →
  1. CIA intelligence brief: Determined to strike in the U.S. Collection PDF page 94 · 2001-08-06
  2. CIA intelligence brief: First post-attack situation report Collection PDF page 98 · 2001-09-12

Afghanistan: aid routes, al-Qaeda and bin Laden

Aid route — May 1980 record: A State Department memorandum describes Soviet-made arms procured by CIA, flown through Saudi Arabia to Pakistan. It assigns Afghan training to Pakistani personnel and describes CIA coordination with Pakistani intelligence. This dated record supports the intermediary route, not a direct CIA–bin Laden relationship.

  1. State Department memorandum, May 9, 1980

Weapons changed over time: The 1980 memorandum lists Soviet-made weapons. Defense Department history records the 1986 decision to provide U.S. Stinger missiles. The early weapons mix must not be generalized to the entire war.

  1. State Department memorandum, May 9, 1980
  2. Defense Department history, volume 10: 1986 Stinger decision

Bin Laden training claim: The 9/11 Commission describes independent support and training for bin Laden’s circle and little or no U.S. assistance. The reviewed sources do not substantiate that CIA trained him.

  1. 9/11 Commission, chapter 2

Sanctuary and chronology: Bin Laden returned to Afghanistan in 1996; the Taliban alliance supplied sanctuary for al-Qaeda’s training and plotting. He was on a U.S. watchlist by 1993, so a claim that Washington never knew who he was requires a narrower period.

  1. 9/11 Commission, chapter 2
  2. 9/11 Commission, chapter 4

Financing: The Commission describes donor fundraising and limited finances after departure from Sudan, rather than a simple explanation that al-Qaeda’s operations were funded entirely from bin Laden’s personal fortune.

  1. 9/11 Commission, chapter 5

Open questions: exact delivery sites, transaction-level aid amounts and faction recipients. Map routes are schematic regional connections, not verified flight tracks.

Research methods

Prepared September 24, 2026 from the existing subject databases, a light historical overview and targeted public-source checks. This is a bounded first-pass review, not an exhaustive investigation. Official records, attributed reporting and interested-party responses are distinguished. Source limitations and unresolved totals remain explicit.

Read the full research update

Afghanistan and the pre-9/11 record

Osama bin Laden →The CIA training claim →Aid through Pakistan →
World Trade Center →Pentagon →Flight 93 — Shanksville →Osama bin Laden →Khalid Sheikh Mohammed →

Related records

Open the interactive map

Detailed records

World Trade Center

← September 11 reportSeptember 11

World Trade Center

Documented in cited record

American Airlines Flight 11 struck the North Tower at about 8:46 a.m.; United Airlines Flight 175 struck the South Tower at about 9:03 a.m. Both towers later collapsed. The attacks in New York killed 2,753 people.

Documented connections

Explore this part of the record

September 11, 2001 →Connection and sources →

North Tower

North Tower →Connection and sources →

South Tower

South Tower →Connection and sources →

Separate building in the affected complex

World Trade Center 7 →Connection and sources →

Evacuation response

Rescue and evacuation →Connection and sources →

Open the interactive map

Pentagon

← September 11 reportSeptember 11

Pentagon

Documented in cited record

American Airlines Flight 77 struck the Pentagon in Arlington, Virginia, at about 9:37 a.m. The 184 victims included 125 people in the building and 59 passengers and crew aboard the aircraft.

Documented connections

Explore this part of the record

September 11, 2001 →Connection and sources →

Aircraft impact

American Airlines Flight 77 →Connection and sources →

Open the interactive map

Flight 93 — Shanksville

← September 11 reportSeptember 11

Flight 93 — Shanksville

Documented in cited record

After learning of the other attacks, Flight 93’s passengers and crew fought back against the hijackers. The aircraft crashed near Shanksville, Pennsylvania, at about 10:03 a.m., killing its 40 passengers and crew. Their resistance prevented the aircraft from reaching its intended Washington target.

Simplified historical route traced from the Commission diagrams; not a point-by-point radar replay.

People and businesses associated with this location

Flight 93 crash site

Ahmed al-Haznawi →

Identified hijacker

Connection and sources →
Ahmed al-Nami →

Identified hijacker

Connection and sources →
Saeed al-Ghamdi →

Identified hijacker

Connection and sources →

Documented connections

Explore this part of the record

September 11, 2001 →Connection and sources →

Pilot

Ziad Jarrah →Connection and sources →

Identified hijacker

Ahmed al-Haznawi →Connection and sources →

Identified hijacker

Ahmed al-Nami →Connection and sources →

Identified hijacker

Saeed al-Ghamdi →Connection and sources →

Passengers and crew

Flight 93 passengers and crew →Connection and sources →

Calls

Flight 93 telephone calls →Connection and sources →

Open the interactive map

Osama bin Laden

← September 11 reportSeptember 11

Osama bin Laden

Unknown

Attributed historical role; see legal status

Al-Qaeda leader; Commission findings attribute approval, personnel and backing for the aircraft plot to him.

Afghanistan, 1996: bin Laden arrived in Jalalabad in the east after leaving Sudan. The 9/11 Commission describes his subsequent move to Kandahar following a March 1997 interview.

Before 9/11: the 9/11 Commission identifies Kandahar in southern Afghanistan as his usual base and describes Tarnak Farms near Kandahar airport. The map uses a city reference, not a verified compound coordinate or a position on September 11 itself.

Around September 11, 2001: a 2009 Senate majority staff report describes reports of bin Laden in Khost in eastern Afghanistan, while acknowledging incomplete knowledge of his movements. It traces his later movement through Kabul and Jalalabad to Tora Bora in December.

CIA operations, September 26, 2001: the JAWBREAKER team entered the northeastern Panjshir Valley and joined the Northern Alliance. This is a separate period and operation from the Soviet-war aid program.

Location gap: exact movements around September 11 remain incompletely established in the reviewed records. Historical bases, reported sightings and later battle locations are kept separate.

Documented connections

Role in the documented record

Planning network →Connection and sources →

Leader

Al-Qaeda →Connection and sources →

Subject of threat reporting

Presidential intelligence briefs →Connection and sources →

Aid route — May 1980 record

A State Department memorandum describes Soviet-made arms procured by CIA, flown through Saudi Arabia to Pakistan. It assigns Afghan training to Pakistani personnel and describes CIA coordination with Pakistani intelligence. This dated record supports the intermediary route, not a direct CIA–bin Laden relationship.

Aid route — May 1980 record →Connection and sources →

Weapons changed over time

The 1980 memorandum lists Soviet-made weapons. Defense Department history records the 1986 decision to provide U.S. Stinger missiles. The early weapons mix must not be generalized to the entire war.

Weapons changed over time →Connection and sources →

Bin Laden training claim

The 9/11 Commission describes independent support and training for bin Laden’s circle and little or no U.S. assistance. The reviewed sources do not substantiate that CIA trained him.

Bin Laden training claim →Connection and sources →

Sanctuary and chronology

Bin Laden returned to Afghanistan in 1996; the Taliban alliance supplied sanctuary for al-Qaeda’s training and plotting. He was on a U.S. watchlist by 1993, so a claim that Washington never knew who he was requires a narrower period.

Sanctuary and chronology →Connection and sources →

Financing

The Commission describes donor fundraising and limited finances after departure from Sudan, rather than a simple explanation that al-Qaeda’s operations were funded entirely from bin Laden’s personal fortune.

Financing →Connection and sources →

Summary

Bin Laden training claim: The 9/11 Commission describes independent support and training for bin Laden’s circle and little or no U.S. assistance. The reviewed sources do not substantiate that CIA trained him.

  1. 9/11 Commission, chapter 2

Sanctuary and chronology: Bin Laden returned to Afghanistan in 1996; the Taliban alliance supplied sanctuary for al-Qaeda’s training and plotting. He was on a U.S. watchlist by 1993, so a claim that Washington never knew who he was requires a narrower period.

  1. 9/11 Commission, chapter 2
  2. 9/11 Commission, chapter 4

Financing: The Commission describes donor fundraising and limited finances after departure from Sudan, rather than a simple explanation that al-Qaeda’s operations were funded entirely from bin Laden’s personal fortune.

  1. 9/11 Commission, chapter 5

Historical locations: Kandahar in southern Afghanistan was a pre-9/11 base. A Senate staff report describes a reported sighting in eastern Khost around 9/11 and later movement to Tora Bora. Exact movements around September 11 remain incomplete.

  1. 9/11 Commission Report, chapter 4: Tarnak Farms and Kandahar · 2004-07-22
  2. Senate Foreign Relations Committee majority staff: Tora Bora Revisited, pp. 4–5 · 2009-11-30

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Khalid Sheikh Mohammed

← September 11 reportSeptember 11

Khalid Sheikh Mohammed

Unknown

Attributed historical role; see legal status

Principal operational architect in the Commission account; a military-commission defendant. Historical attribution is distinct from a criminal verdict.

Documented connections

Role in the documented record

Planning network →Connection and sources →

Operational planning

Planning network →Connection and sources →

Open the interactive map

Huffman Aviation / Venice

← September 11 reportSeptember 11

Huffman Aviation / Venice

Documented in cited record

Atta and al-Shehhi enrolled in flight training in July 2000.

People and businesses associated with this location

Venice, Florida

Connected locations

Atta and al-Shehhi enroll →

Timeline location · 2000-07-03

Relationship, dates and sources →

Documented connections

Flight training

Mohamed Atta →Connection and sources →

Flight training

Marwan al-Shehhi →Connection and sources →

Timeline location · 2000-07-03

Atta and al-Shehhi enroll →Connection and sources →

Open the interactive map

Florida Flight Training Center / Venice

← September 11 reportSeptember 11

Florida Flight Training Center / Venice

Documented in cited record

Jarrah began flight training in June 2000.

People and businesses associated with this location

Venice, Florida

People and businesses associated with this location

Florida

Documented connections

Flight training

Ziad Jarrah →Connection and sources →

Open the interactive map

Arizona flight training

← September 11 reportSeptember 11

Arizona flight training

Documented in cited record

Hanjour held a commercial pilot certificate obtained in Arizona in 1999 and took refresher and simulator training in 2000-2001.

People and businesses associated with this location

Arizona

Documented connections

Flight training

Hani Hanjour →Connection and sources →

Open the interactive map

Mohamed Atta

← September 11 reportSeptember 11

Mohamed Atta

Unknown

Documented in cited record

Pilot and tactical leader on American Airlines Flight 11. Nationality: Egypt.

Documented connections

Pilot

American Airlines Flight 11 →Connection and sources →

Operational liaison

Ramzi bin al-Shibh →Connection and sources →

Flight training

Huffman Aviation / Venice →Connection and sources →

$10,000 transfer, 2000-07-18

Ali Abdul Aziz Ali / Ammar al-Baluchi →Connection and sources →

$9,500 transfer, 2000-08-05

Ali Abdul Aziz Ali / Ammar al-Baluchi →Connection and sources →

$20,000 transfer, 2000-08-29

Ali Abdul Aziz Ali / Ammar al-Baluchi →Connection and sources →

$70,000 transfer, 2000-09-17

Ali Abdul Aziz Ali / Ammar al-Baluchi →Connection and sources →

Timeline location · 2000-06-03

Atta arrives →Connection and sources →

Timeline location · 2001-04-11

Atta and al-Shehhi lease an apartment →Connection and sources →

Timeline location · 2001-07-08

Atta arrives in Madrid →Connection and sources →

Timeline location · 2001-07-19

Atta returns from Spain →Connection and sources →

Timeline location · 2001-09-07

Final positioning →Connection and sources →

Timeline location · 2001-09-09

Atta flies to Boston →Connection and sources →

Timeline location · 2001-09-10

Atta and Omari travel to Portland →Connection and sources →

Connected locations

American Airlines Flight 11 →

Pilot

Relationship, dates and sources →
Huffman Aviation / Venice →

Flight training

Relationship, dates and sources →
Atta and al-Shehhi enroll →

Timeline location · 2000-07-03 → Flight training

Relationship, dates and sources →
American Airlines Flight 11 →

Pilot

Relationship, dates and sources →
Atta flies to Boston →

Timeline location · 2001-09-09

Relationship, dates and sources →
Atta arrives →

Timeline location · 2000-06-03

Relationship, dates and sources →
Atta and al-Shehhi lease an apartment →

Timeline location · 2001-04-11

Relationship, dates and sources →
Atta returns from Spain →

Timeline location · 2001-07-19

Relationship, dates and sources →
Final positioning →

Timeline location · 2001-09-07

Relationship, dates and sources →
Final positioning →

Timeline location · 2001-09-07

Relationship, dates and sources →
Atta flies to Boston →

Timeline location · 2001-09-09

Relationship, dates and sources →
Atta and Omari travel to Portland →

Timeline location · 2001-09-10

Relationship, dates and sources →

Open the interactive map

Marwan al-Shehhi

← September 11 reportSeptember 11

Marwan al-Shehhi

Unknown

Documented in cited record

Pilot on United Airlines Flight 175. Nationality: United Arab Emirates.

Documented connections

Pilot

United Airlines Flight 175 →Connection and sources →

Flight training

Huffman Aviation / Venice →Connection and sources →

$5,000 transfer, 2000-06-29

Ali Abdul Aziz Ali / Ammar al-Baluchi →Connection and sources →

Timeline location · 2000-05-29

Al-Shehhi arrives →Connection and sources →

Connected locations

United Airlines Flight 175 →

Pilot

Relationship, dates and sources →
Huffman Aviation / Venice →

Flight training

Relationship, dates and sources →
Atta and al-Shehhi enroll →

Timeline location · 2000-07-03 → Flight training

Relationship, dates and sources →
United Airlines Flight 175 →

Pilot

Relationship, dates and sources →
Al-Shehhi arrives →

Timeline location · 2000-05-29

Relationship, dates and sources →

Open the interactive map

Hani Hanjour

← September 11 reportSeptember 11

Hani Hanjour

Unknown

Documented in cited record

Pilot on American Airlines Flight 77. Nationality: Saudi Arabia.

Documented connections

Pilot

American Airlines Flight 77 →Connection and sources →

Flight training

Arizona flight training →Connection and sources →

Timeline location · 2000-12-08

Hanjour returns to the U.S. →Connection and sources →

Timeline location · 2001-04-04

Hazmi and Hanjour reach Virginia →Connection and sources →

Connected locations

American Airlines Flight 77 →

Pilot

Relationship, dates and sources →
Arizona flight training →

Flight training

Relationship, dates and sources →
Hanjour returns to the U.S. →

Timeline location · 2000-12-08

Relationship, dates and sources →
Hanjour returns to the U.S. →

Timeline location · 2000-12-08

Relationship, dates and sources →
Hazmi and Hanjour reach Virginia →

Timeline location · 2001-04-04

Relationship, dates and sources →

Open the interactive map

Ziad Jarrah

← September 11 reportSeptember 11

Ziad Jarrah

Unknown

Documented in cited record

Pilot on Flight 93 / Pennsylvania. Nationality: Lebanon.

Documented connections

Pilot

Flight 93 — Shanksville →Connection and sources →

Flight training

Florida Flight Training Center / Venice →Connection and sources →

Timeline location · 2000-06-27

Jarrah arrives →Connection and sources →

Connected locations

Florida Flight Training Center / Venice →

Flight training

Relationship, dates and sources →
Jarrah arrives →

Timeline location · 2000-06-27

Relationship, dates and sources →
Florida Flight Training Center / Venice →

Flight training

Relationship, dates and sources →
Jarrah arrives →

Timeline location · 2000-06-27

Relationship, dates and sources →
Flight 93 — Shanksville →

Pilot

Relationship, dates and sources →

Open the interactive map

Plot financing

← September 11 reportSeptember 11

Plot financing

Documented in cited record

The Commission estimated plot costs at $400,000–$500,000.

Documented connections

Explore this part of the record

September 11, 2001 →Connection and sources →

Documented transfer series

Ali Abdul Aziz Ali / Ammar al-Baluchi →Connection and sources →

Return and facilitation records

Mustafa al-Hawsawi →Connection and sources →

Financing assessment

Drug-financing review →Connection and sources →

Sources

  1. Terrorist Financing: staff monograph · 2004-08
  2. The 9/11 Commission Report · 2004-07-22
  3. 9/11 Commission, chapter 5: financing 9/11 Commission, chapter 5: financing · 2004-07-22

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Ali Abdul Aziz Ali / Ammar al-Baluchi

← September 11 reportSeptember 11

Ali Abdul Aziz Ali / Ammar al-Baluchi

Unknown

Attributed historical role; see legal status

UAE-based financial facilitator identified in the Commission money records; military-commission defendant.

Documented connections

Role in the documented record

Planning network →Connection and sources →

$5,000 transfer, 2000-04-16

Nawaf al-Hazmi →Connection and sources →

$5,000 transfer, 2000-06-29

Marwan al-Shehhi →Connection and sources →

$10,000 transfer, 2000-07-18

Mohamed Atta →Connection and sources →

$9,500 transfer, 2000-08-05

Mohamed Atta →Connection and sources →

$20,000 transfer, 2000-08-29

Mohamed Atta →Connection and sources →

$70,000 transfer, 2000-09-17

Mohamed Atta →Connection and sources →

Documented transfer series

Plot financing →Connection and sources →

Open the interactive map

Mustafa al-Hawsawi

← September 11 reportSeptember 11

Mustafa al-Hawsawi

Unknown

Attributed historical role; see legal status

Financial facilitator associated with UAE accounts and the return of unused money. Military-commission defendant.

Documented connections

Role in the documented record

Planning network →Connection and sources →

Return and facilitation records

Plot financing →Connection and sources →

Open the interactive map

Warnings and response

← September 11 reportSeptember 11

Warnings and response

Documented in cited record

The records include dated intelligence warnings, oversight findings and emergency actions.

Documented connections

Explore this part of the record

September 11, 2001 →Connection and sources →

Examine information handling

CIA →Connection and sources →

Examine information handling

FBI →Connection and sources →

Emergency response

FAA / air traffic control →Connection and sources →

Emergency response

NORAD / NEADS →Connection and sources →

Long-term aftermath

Long-term health effects →Connection and sources →

Subject examined in records

Fahad al-Thumairy →Connection and sources →

Communications

Emergency communications →Connection and sources →

Dated intelligence products

Presidential intelligence briefs →Connection and sources →

Timeline location · 2001-08-06

Presidential warning brief →Connection and sources →

Open the interactive map

CIA

← September 11 reportSeptember 11

CIA

Documented in cited record

Intelligence agency involved in monitoring the Malaysia meeting and receiving travel information; coordination failures documented.

Documented connections

Examine information handling

Warnings and response →Connection and sources →

Issuing agency

Presidential intelligence briefs →Connection and sources →

Timeline location · 2001-08-23

Mihdhar and Hazmi alerts circulated →Connection and sources →

Connected locations

Mihdhar and Hazmi alerts circulated →

Timeline location · 2001-08-23

Relationship, dates and sources →

Open the interactive map

FBI

← September 11 reportSeptember 11

FBI

Documented in cited record

Investigative agency; inspector-general findings identify failures in analysis, dissemination and handling of leads.

Documented connections

Examine information handling

Warnings and response →Connection and sources →

Timeline location · 2001-07-10

Phoenix memorandum →Connection and sources →

Connected locations

Phoenix memorandum →

Timeline location · 2001-07-10

Relationship, dates and sources →

Open the interactive map

Zacarias Moussaoui

← September 11 reportSeptember 11

Zacarias Moussaoui

Unknown

Attributed historical role; see legal status

Arrested before September 11; later pleaded guilty to six conspiracy charges and received a life sentence. Not one of the 19 aboard the aircraft.

Documented connections

Role in the documented record

Planning network →Connection and sources →

Timeline location · 2001-08-16

Moussaoui arrested →Connection and sources →

Connected locations

Moussaoui arrested →

Timeline location · 2001-08-16

Relationship, dates and sources →

Open the interactive map

Saudi civil litigation

← September 11 reportSeptember 11

Saudi civil litigation

Court order dated November 5, 2025

On November 5, 2025, Judge George B. Daniels stayed proceedings involving Saudi Arabia pending its interlocutory appeal.

Documented connections

Civil proceedings

September 11, 2001 →Connection and sources →

Court

Southern District of New York →Connection and sources →

Jurisdictional issue

JASTA jurisdiction →Connection and sources →

Disputed assistance allegations

Omar al-Bayoumi →Connection and sources →

Disputed assistance allegations

Fahad al-Thumairy →Connection and sources →

Sources

  1. Saudi civil litigation — stay pending appeal 03 MDL 1570 (GBD) (SN); associated 1:03-cv-09848, document 747, pp. 1–2, 4–6 · 2025-11-05

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Rescue and evacuation

← September 11 reportSeptember 11

Rescue and evacuation

Documented in cited record

Responders and civilians assisted people escaping the World Trade Center.

Documented connections

Evacuation response

World Trade Center →Connection and sources →

Fire rescue

FDNY →Connection and sources →

Police response

NYPD →Connection and sources →

Port Authority response

Port Authority Police →Connection and sources →

City coordination

Office of Emergency Management →Connection and sources →

Evacuation by water

Maritime evacuation →Connection and sources →

Sources

  1. 9/11 Commission — Heroism and Horror Chapter 9, sections 9.1–9.2 · 2004-07-22
  2. Mike Day recalls the maritime evacuation Interview: call for boats; civilian mariners; dedicated routes · 2026-09-09

Open the interactive map

Maritime evacuation

← September 11 reportSeptember 11

Maritime evacuation

Coast Guard retrospective account

Coast Guard personnel and civilian boats evacuated Lower Manhattan. The Coast Guard interview describes roughly half a million evacuees in nine hours.

People and businesses associated with this location

New York City

U.S. Coast Guard →

Coordination

Connection and sources →
Mike Day →

Coordination → Radio call

Connection and sources →
Civilian mariners →

Civilian response

Connection and sources →

Documented connections

Evacuation by water

Rescue and evacuation →Connection and sources →

Coordination

U.S. Coast Guard →Connection and sources →

Civilian response

Civilian mariners →Connection and sources →

New Jersey route

New Jersey landing routes →Connection and sources →

Brooklyn route

Brooklyn landing routes →Connection and sources →

Sources

  1. Mike Day recalls the maritime evacuation Interview: call for boats; civilian mariners; dedicated routes · 2026-09-09

Open the interactive map

Mike Day

← September 11 reportSeptember 11

Mike Day

Unknown

First-person retrospective account

Then a Coast Guard lieutenant, Day broadcast a call for civilian vessels.

Documented connections

Radio call

U.S. Coast Guard →Connection and sources →

Route coordination

Jamie Wilson →Connection and sources →

Sources

  1. Mike Day recalls the maritime evacuation Interview: call for boats; civilian mariners; dedicated routes · 2026-09-09

Connected locations

Maritime evacuation →

Coordination → Radio call

Relationship, dates and sources →

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Flight 93 passengers and crew

← September 11 reportSeptember 11

Flight 93 passengers and crew

Documented in cited record

Forty passengers and crew died aboard Flight 93. This branch links selected publicly commemorated individuals.

Documented connections

Passengers and crew

Flight 93 — Shanksville →Connection and sources →

Captain

Jason M. Dahl →Connection and sources →

First officer

LeRoy Homer →Connection and sources →

Flight attendant

Lorraine G. Bay →Connection and sources →

Flight attendant

Sandy Waugh Bradshaw →Connection and sources →

Flight attendant

Wanda Anita Green →Connection and sources →

Flight attendant

CeeCee Ross Lyles →Connection and sources →

Flight attendant

Deborah Jacobs Welsh →Connection and sources →

Passenger

Todd M. Beamer →Connection and sources →

Passenger

Mark Bingham →Connection and sources →

Passenger

Thomas E. Burnett, Jr. →Connection and sources →

Passenger

Jeremy Logan Glick →Connection and sources →

Sources

  1. Flight 93 — historical questions and answers Telephone calls, resistance, target and crash
  2. Flight 93 — crew and passengers Public roster; selected entries linked individually below · 2023-07-26

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World Trade Center 7

← September 11 reportSeptember 11

World Trade Center 7

Documented in cited record

A separate building that collapsed later that day. NIST attributes its probable collapse sequence to uncontrolled fires and progressive structural failure.

People and businesses associated with this location

New York City

Office of Emergency Management →

Headquarters

Connection and sources →

Documented connections

Separate building in the affected complex

World Trade Center →Connection and sources →

Headquarters

Office of Emergency Management →Connection and sources →

Engineering investigation

NIST investigation →Connection and sources →

Uncontrolled fires

WTC 7 fires →Connection and sources →

Sources

  1. NIST WTC 7 investigation — questions and answers Questions 6 and 8–10: probable collapse sequence and water supply
  2. 9/11 Commission — Heroism and Horror Chapter 9, sections 9.1–9.2 · 2004-07-22

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NIST investigation

← September 11 reportSeptember 11

NIST investigation

Documented in cited record

NIST investigated the WTC 7 collapse under its building-safety authority.

Documented connections

Engineering investigation

World Trade Center 7 →Connection and sources →

Sources

  1. NIST WTC 7 investigation — questions and answers Questions 6 and 8–10: probable collapse sequence and water supply

Connected locations

World Trade Center 7 →

Engineering investigation

Relationship, dates and sources →

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Presidential intelligence briefs

← September 11 reportSeptember 11

Presidential intelligence briefs

Government document release

CIA released 71 intelligence products on September 11, 2026. This branch traces selected warnings and their later assessment.

Documented connections

Dated intelligence products

Warnings and response →Connection and sources →

Issuing agency

CIA →Connection and sources →

Released September 2026

2026 CIA document release →Connection and sources →

Brief dated 1998-02-13

Weapons-acquisition warning →Connection and sources →

Brief dated 1998-02-24

Fatwa targeting Americans →Connection and sources →

Brief dated 1998-06-23

Potential targets abroad and at home →Connection and sources →

Brief dated 1998-07-03

Domestic warnings with questionable sources →Connection and sources →

Brief dated 1998-08-28

Network survives missile strikes →Connection and sources →

Brief dated 1998-09-01

North American infrastructure →Connection and sources →

Brief dated 1998-09-04

Threats in the U.S. and Europe →Connection and sources →

Brief dated 1998-09-10

Aircraft attack warning →Connection and sources →

Brief dated 1998-12-04

Hijacking to seek prisoner releases →Connection and sources →

Brief dated 1998-12-11

Near-term attack warning →Connection and sources →

Brief dated 1999-01-19

Strains with the Taliban →Connection and sources →

Brief dated 1999-10-18

Drug-financing allegation →Connection and sources →

Brief dated 2000-02-11

Further drug-trafficking allegation →Connection and sources →

Brief dated 2001-05-22

Captured suspect’s hostage-plot account →Connection and sources →

Brief dated 2001-07-24

One operation delayed, others continuing →Connection and sources →

Brief dated 2001-07-25

Assessment of the 1998 fatwa →Connection and sources →

Brief dated 2001-08-06

Determined to strike in the U.S. →Connection and sources →

Brief dated 2001-08-28

Operational capabilities assessment →Connection and sources →

Brief dated 2001-09-12

First post-attack situation report →Connection and sources →

Subject of threat reporting

Osama bin Laden →Connection and sources →

Sources

  1. CIA: release of 71 presidential intelligence briefs CIA: release of 71 presidential intelligence briefs · 2026-09-11
  2. CIA intelligence brief: Weapons-acquisition warning Collection PDF page 1 · 1998-02-13
  3. CIA intelligence brief: Fatwa targeting Americans Collection PDF page 2 · 1998-02-24
  4. CIA intelligence brief: Potential targets abroad and at home Collection PDF page 6 · 1998-06-23
  5. CIA intelligence brief: Domestic warnings with questionable sources Collection PDF page 8 · 1998-07-03
  6. CIA intelligence brief: Network survives missile strikes Collection PDF page 13 · 1998-08-28
  7. CIA intelligence brief: North American infrastructure Collection PDF page 14 · 1998-09-01
  8. CIA intelligence brief: Threats in the U.S. and Europe Collection PDF page 17 · 1998-09-04
  9. CIA intelligence brief: Aircraft attack warning Collection PDF page 19 · 1998-09-10
  10. CIA intelligence brief: Hijacking to seek prisoner releases Collection PDF page 25 · 1998-12-04
  11. CIA intelligence brief: Near-term attack warning Collection PDF page 26 · 1998-12-11
  12. CIA intelligence brief: Strains with the Taliban Collection PDF page 28 · 1999-01-19
  13. CIA intelligence brief: Drug-financing allegation Collection PDF page 43 · 1999-10-18
  14. 9/11 Commission, chapter 5: financing 9/11 Commission, chapter 5: financing · 2004-07-22
  15. CIA intelligence brief: Further drug-trafficking allegation Collection PDF page 49 · 2000-02-11
  16. CIA intelligence brief: Captured suspect’s hostage-plot account Collection PDF page 86 · 2001-05-22
  17. CIA intelligence brief: One operation delayed, others continuing Collection PDF page 92 · 2001-07-24
  18. CIA intelligence brief: Assessment of the 1998 fatwa Collection PDF page 93 · 2001-07-25
  19. CIA intelligence brief: Determined to strike in the U.S. Collection PDF page 94 · 2001-08-06
  20. CIA intelligence brief: Operational capabilities assessment Collection PDF page 97 · 2001-08-28
  21. CIA intelligence brief: First post-attack situation report Collection PDF page 98 · 2001-09-12

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Aircraft attack warning

← September 11 reportSeptember 11

Aircraft attack warning

Contemporaneous intelligence assessment

The memorandum included a report that an explosives-laden aircraft might strike a U.S. city. It also stated that intelligence gave no conclusive information about future attack plans.

Documented connections

Brief dated 1998-09-10

Presidential intelligence briefs →Connection and sources →

Later corroboration and analysis review

Aircraft-warning review →Connection and sources →

Sources

  1. CIA intelligence brief: Aircraft attack warning Collection PDF page 19 · 1998-09-10
  2. 9/11 Commission, chapter 11: failures of imagination 9/11 Commission, chapter 11: failures of imagination · 2004-07-22

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Drug-financing allegation

← September 11 reportSeptember 11

Drug-financing allegation

Intelligence allegation; later Commission finding differs

A CIA brief alleged investments in 57 narcotics laboratories associated with Taliban leader Mullah Omar. The 9/11 Commission later found no reliable evidence that bin Laden earned money from drug trafficking.

Documented connections

Brief dated 1999-10-18

Presidential intelligence briefs →Connection and sources →

Later financing finding differs

Drug-financing review →Connection and sources →

Sources

  1. CIA intelligence brief: Drug-financing allegation Collection PDF page 43 · 1999-10-18
  2. 9/11 Commission, chapter 5: financing 9/11 Commission, chapter 5: financing · 2004-07-22

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Drug-financing review

← September 11 reportSeptember 11

Drug-financing review

9/11 Commission finding

The Commission found no reliable evidence that bin Laden participated in or earned money from drug trafficking. This differs from the allegations recorded in the released CIA briefs.

Documented connections

Later financing finding differs

Drug-financing allegation →Connection and sources →

Later financing finding differs

Further drug-trafficking allegation →Connection and sources →

Financing assessment

Plot financing →Connection and sources →

Sources

  1. 9/11 Commission, chapter 5: financing 9/11 Commission, chapter 5: financing · 2004-07-22

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Determined to strike in the U.S.

← September 11 reportSeptember 11

Determined to strike in the U.S.

Contemporaneous intelligence assessment

The brief described domestic threat reporting, suspicious activity consistent with preparations for hijackings, and roughly 70 FBI investigations. Some earlier hijacking reports remained uncorroborated.

Documented connections

Brief dated 2001-08-06

Presidential intelligence briefs →Connection and sources →

Briefing chronology

August 6 briefing record →Connection and sources →

Sources

  1. CIA intelligence brief: Determined to strike in the U.S. Collection PDF page 94 · 2001-08-06
  2. 9/11 Commission, chapter 8: summer threat reporting 9/11 Commission, chapter 8: summer threat reporting · 2004-07-22

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First post-attack situation report

← September 11 reportSeptember 11

First post-attack situation report

Contemporaneous intelligence assessment

The 4 a.m. situation report assembled early accounts of bin Laden-related planning and international responses. It was produced after the attacks; some initial accounts in it were mistaken or uncertain.

Documented connections

Brief dated 2001-09-12

Presidential intelligence briefs →Connection and sources →

Sources

  1. CIA intelligence brief: First post-attack situation report Collection PDF page 98 · 2001-09-12

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Bin Laden training claim

← September 11 reportSeptember 11

Bin Laden training claim

The 9/11 Commission describes independent support and training for bin Laden’s circle and little or no U.S. assistance. The reviewed sources do not substantiate that CIA trained him.

Documented connections

Bin Laden training claim

The 9/11 Commission describes independent support and training for bin Laden’s circle and little or no U.S. assistance. The reviewed sources do not substantiate that CIA trained him.

Osama bin Laden →Connection and sources →

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Pakistan intelligence — distribution

← September 11 reportSeptember 11

Pakistan intelligence — distribution

May 1980 documented aid chain. Map position is a rounded regional reference, not a verified shipment facility or route.

People and businesses associated with this location

Pakistan — country reference

Saudi Arabia — supply transit →

Supply chain described May 1980

Connection and sources →
Afghan resistance — recipients →

Supply chain described May 1980

Connection and sources →

Connected locations

Saudi Arabia — supply transit →

Supply chain described May 1980

Relationship, dates and sources →
Afghan resistance — recipients →

Supply chain described May 1980

Relationship, dates and sources →

Documented connections

Supply chain described May 1980

A State Department memorandum describes Soviet-made arms procured by CIA, flown through Saudi Arabia to Pakistan. It assigns Afghan training to Pakistani personnel and describes CIA coordination with Pakistani intelligence. This dated record supports the intermediary route, not a direct CIA–bin Laden relationship.

Saudi Arabia — supply transit →Connection and sources →

Supply chain described May 1980

A State Department memorandum describes Soviet-made arms procured by CIA, flown through Saudi Arabia to Pakistan. It assigns Afghan training to Pakistani personnel and describes CIA coordination with Pakistani intelligence. This dated record supports the intermediary route, not a direct CIA–bin Laden relationship.

Afghan resistance — recipients →Connection and sources →

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