
The 9/11 attacks were carried out by 19 men affiliated with al-Qaeda, who were organised into four teams, each led by a pilot-trained hijacker. The remaining members of each team were muscle hijackers, who were trained to help subdue the pilots, passengers, and crew. The muscle hijackers were not told the true nature of their mission until the day of the attacks and, according to the FBI, did not know they were on a suicide mission.
| Characteristics | Values |
|---|---|
| Number of muscle hijackers | 15 |
| Purpose | To provide 'muscle' to overwhelm pilots, passengers, and crew |
| Knowledge of true nature of their mission | Were not told until the day of the attacks |
| Countries of origin | Saudi Arabia, United Arab Emirates |
| Arrival in the US | Early- and mid-2001 |
| Training | Not pilot-trained |
| Knowledge of suicide mission | Unaware |
| Contact with pilot hijackers | No |
| Leaders | Mohamed Atta, Marwan al-Shehhi, Ziad Jarrah, Khalid al-Mihdhar, Nawaf al-Hazmi |
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What You'll Learn
- The muscle hijackers were 19 men affiliated with al-Qaeda
- They were organised into four teams, each with a pilot-trained leader
- The muscle hijackers were trained to overpower pilots, passengers and crew
- The majority of muscle hijackers did not know they were on a suicide mission
- Osama bin Laden wanted the US Capitol, the Pentagon and the World Trade Center attacked

The muscle hijackers were 19 men affiliated with al-Qaeda
The 19 muscle hijackers were organised into four teams, each led by a pilot-trained hijacker. Each team was assigned a different flight and a unique target. The targets were chosen by Osama bin Laden and Mohamed Atta, who was the ringleader of the four groups. Atta was also believed to be the hijackers' leader and flew the first plane to destruction in New York.
The muscle hijackers were selected in late 2000 and early 2001, with 15 of them being citizens of Saudi Arabia. The remaining four were from other countries: two from the United Arab Emirates, and one each from Egypt and Lebanon. Khalid al-Mihdhar and Nawaf al-Hazmi, both experienced jihadists in Osama bin Laden's eyes, were among the first hijackers to arrive in the United States in January 2000. They were joined by three hijacker-pilots, Mohamed Atta, Marwan al-Shehhi, and Ziad Jarrah, in mid-2000.
The muscle hijackers were kept in the dark about the true nature of their mission until the day of the attacks. According to the FBI, they did not know they were on a suicide mission, as they had not prepared wills or given other indications of expecting their deaths. This strategy helped maintain operational security and increased the chances of success for the mission.
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They were organised into four teams, each with a pilot-trained leader
The 9/11 attacks were carried out by 19 men affiliated with al-Qaeda, organised into four teams, each with a pilot-trained leader. These teams were tasked with hijacking four different flights, each with a unique target to crash into. The muscle hijackers were trained to help subdue pilots, passengers, and crew, allowing the pilot hijackers to take control of the flights.
The first team was led by Mohamed Atta, who also acted as the ringleader over all four groups. Atta was a member of the Hamburg Cell, along with Marwan al-Shehhi and Ziad Jarrah, who led the other teams. Atta and his team targeted the North Tower of the World Trade Center.
The second team was led by Marwan al-Shehhi, who piloted United Airlines Flight 175, which crashed into the South Tower of the World Trade Center.
The third team was led by Ziad Jarrah, a Lebanese national and member of the Hamburg Cell. His team hijacked United Airlines Flight 93, which crashed in a field in Pennsylvania.
The fourth team was led by Hani Hanjour, who was not a member of the Hamburg Cell. Hanjour piloted American Airlines Flight 77, which crashed into the Pentagon.
The muscle hijackers were mostly from Saudi Arabia, with the exception of Fayez Banihammad, who was from the United Arab Emirates. They were selected in late 2000 or early 2001, and their role was to provide "'muscle" to overwhelm the passengers and crew. According to the FBI, most of these muscle hijackers did not know they were on a suicide mission, as they had not prepared wills or given other indications of expecting their deaths. Osama Bin Laden also kept them in the dark about the true nature of their mission until the day of the attacks.
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The muscle hijackers were trained to overpower pilots, passengers and crew
The 9/11 attacks were carried out by 19 terrorists affiliated with al-Qaeda, a jihadist organisation. The group was organised into four teams, each led by a pilot-trained hijacker, with three or four "muscle hijackers" who were trained to overpower pilots, passengers, and crew.
The "muscle hijackers" were selected to provide "muscle" and overwhelm those on board. The majority of these hijackers were from Saudi Arabia, with the exception of Fayez Banihammad, who was from the United Arab Emirates. Khalid al-Mihdhar and Nawaf al-Hazmi, both initially intended to be pilot hijackers, were kept on as "muscle" hijackers after struggling with their pilot lessons.
The "muscle hijackers" arrived in the US in early to mid-2001, shortly before the attacks. They were not in contact with the pilot hijackers and were not informed of the true nature of their mission until the day of the attacks. According to the FBI, these hijackers did not know they were on a suicide mission, as they had not prepared wills or given other indications that they expected their deaths.
The leader of al-Qaeda, Osama bin Laden, chose the pilot hijackers due to their extensive knowledge of Western culture and language skills, increasing the mission's operational security and chances of success. Mohamed Atta, believed to be the hijackers' leader, was in charge of planning and execution. Atta confirmed the arrival of the "muscle hijackers" in the US and requested more time to work out the details of the attacks.
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The majority of muscle hijackers did not know they were on a suicide mission
The 9/11 attacks were carried out by 19 men affiliated with the jihadist organization al-Qaeda. The hijackers were organized into four teams, each led by a pilot-trained hijacker who would commandeer the flight, with three or four "muscle hijackers" who were trained to help subdue the pilots, passengers, and crew.
There is some debate as to whether the muscle hijackers knew they were on a suicide mission. Some people believe that they all knew from the beginning, and that it would be too risky for the leaders of the operation to keep such crucial information from them. It is argued that if they did not know, they would have started panicking or stressing out, and there were no reports of this from passengers or crew. Additionally, it is said that they would not have joined the mission if they had known they would die, or would have tried to fight back.
However, others argue that the muscle hijackers did not know the full extent of the mission. The FBI and some investigators believe that many of the hijackers did not know they were going to die, and that they thought it was going to be a traditional hijacking operation with demands. Unlike the pilots, the muscle hijackers did not leave wills or give other indications that they expected their lives to end. According to an audio recording from 2001, the muscle hijackers were not in contact with the pilot hijackers and were not told the true nature of their mission until the last minute. Additionally, the fact that some of the muscle hijackers were seen spending their last night on Earth in ways that do not align with the expected behavior of Islamist "martyrs" has been interpreted as a sign that they did not know they were going to die.
While the exact extent of the muscle hijackers' knowledge of the suicide mission is unclear and may never be known for sure, it is believed that they did not know the full details of the operation until the day of the attacks.
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Osama bin Laden wanted the US Capitol, the Pentagon and the World Trade Center attacked
Osama bin Laden was the founder of the Islamist terrorist organisation al-Qaeda and the mastermind behind numerous terrorist attacks against the United States. Bin Laden was a violent terrorist and mass murderer who used bombings and bloodshed to advance his extremist goals. He was born in 1957 in Riyadh, Saudi Arabia, and died on May 2, 2011, in Abbottabad, Pakistan, under orders from President Obama.
Bin Laden wanted the United States Capitol, the Pentagon, and the World Trade Center to be attacked as they were deemed "symbols of America". These targets were passed on by Ramzi Yousef, who had trained in one of bin Laden's camps and led the first terrorist attack on American soil by planting a bomb beneath the World Trade Center in 1993. Bin Laden also openly declared war on the United States and issued fatwas indicating that attacks on the US and its citizens were proper and necessary.
Bin Laden's plans for the attacks on the World Trade Center and the Pentagon were carried out on September 11, 2001, by 19 men affiliated with al-Qaeda. The hijackers were organised into four teams, each led by a pilot-trained hijacker and three or four "muscle hijackers" who helped to subdue pilots, passengers, and crew. The majority of the muscle hijackers did not know they were on a suicide mission and were not told the true nature of their mission until the day of the attacks.
The first two hijackers to arrive in the United States were Khalid al-Mihdhar and Nawaf al-Hazmi, who were potential pilot hijackers but were kept on as muscle hijackers when they did not perform well in their initial pilot lessons. They were followed by three hijacker-pilots, Mohamed Atta, Marwan al-Shehhi, and Ziad Jarrah, who were chosen by bin Laden due to their extensive knowledge of Western culture and language skills. Atta was the ringleader over all four groups and confirmed that all the muscle hijackers had arrived in the United States.
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Frequently asked questions
The muscle hijackers were terrorists who helped overpower the pilots, passengers, and crew during the 9/11 attacks.
No. The muscle hijackers were not trained pilots and were not in contact with the pilot hijackers.
There were 14 muscle hijackers, including Khalid al-Mihdhar and Nawaf al-Hazmi.
13 of the muscle hijackers were from Saudi Arabia, and one, Fayez Banihammad, was from the United Arab Emirates.
The FBI concluded that the majority of the muscle hijackers did not know they were on a suicide mission. Unlike the pilot hijackers, they did not leave any messages for friends and family and did not have copies of instructions for prayer and contemplation.












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