
The 9/11 attacks on the World Trade Center in 2001 involved 19 men affiliated with al-Qaeda, hailing from Saudi Arabia, the United Arab Emirates, Egypt, and Lebanon. The group was organized into four teams, each led by a pilot-trained hijacker and three or four muscle hijackers who were trained to subdue pilots, passengers, and crew. The muscle hijackers, according to FBI analysis, may have believed their role was to free perpetrators of previous extremist attacks or to simply provide muscle to overwhelm passengers and crew. There is debate about whether they knew their mission was suicidal, as they left no messages for loved ones and did not prepare wills, but they were aware of al-Qaeda's history of suicide attacks and the plan to fly planes into buildings.
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What You'll Learn
- The muscle hijackers were not told about the true nature of their mission until the day of the attacks
- The muscle hijackers were not in contact with the pilot hijackers
- The muscle hijackers did not know they were on a suicide mission
- The muscle hijackers were trained to help subdue pilots, passengers, and crew
- The muscle hijackers were chosen for their extensive knowledge of Western culture and language skills

The muscle hijackers were not told about the true nature of their mission until the day of the attacks
The 9/11 attacks were carried out by 19 men affiliated with the jihadist organization al-Qaeda. The men 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.
The muscle hijackers were chosen for their extensive knowledge of Western culture and language skills, increasing the mission's operational security and chances of success. The pilots, on the other hand, were trained to fly the planes and were aware that the mission was a suicide attack. They left messages for friends and family, indicating their knowledge of their impending death. They also had copies of instructions for prayer and contemplation on the eve of the attacks and for "opening your chest to God" at the moment of immolation.
The muscle hijackers, on the other hand, did not leave any similar indications that they knew their lives were in danger. They had not prepared last wills and testaments, and there was no evidence that they expected to die. The FBI concluded that the muscle hijackers did not know they were on a suicide mission and may have believed that the purpose of the hijackings was to free perpetrators of previous extremist attacks or to provide "muscle" to overwhelm the passengers and crew.
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The muscle hijackers were not in contact with the pilot hijackers
The muscle hijackers' lack of contact with the pilot hijackers is supported by several key pieces of evidence. Firstly, the muscle hijackers did not leave any messages for friends or family indicating their knowledge of the suicide mission. They also did not have copies of the instructions for prayer and contemplation found in the luggage of Mohamed Atta, the lead hijacker. Atta, who was in direct communication with Osama bin Laden and al-Qaeda's military wing, coordinated the details of the attacks and assisted with the arrival of the muscle hijackers.
Furthermore, the muscle hijackers' recent arrival in the U.S. and lack of pilot training suggest they were not involved in the planning stages of the attacks. Their role was primarily to provide physical force and intimidation, while the pilot hijackers were in charge of commandeering the flights. The muscle hijackers' education and background also set them apart from the pilot hijackers, who had a better understanding of Western customs and traditions due to their schooling in Germany and the U.S.
While the muscle hijackers may have been aware of the general nature of the mission, they were likely not informed of the specific details or the fact that it was a suicide attack. This strategy of compartmentalization, where only those with a "'need to know' are informed, is a common tactic employed by intelligence organizations to maintain security. By keeping the muscle hijackers in the dark, the planners of the attacks avoided potential psychological barriers and ensured the hijackers were ready to carry out their roles.
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The muscle hijackers did not know they were on a suicide mission
The 9/11 attacks on the World Trade Center in New York City were carried out by 19 men affiliated with the jihadist organization al-Qaeda. The men were organized into four teams, each led by a pilot-trained hijacker and three or four "muscle hijackers". The muscle hijackers were trained to help subdue pilots, passengers, and crew.
The FBI concluded that 11 of the 19 terrorists, the muscle hijackers, did not know they were on a suicide mission. Unlike the lead attackers, they did not leave messages for friends and family, nor did they have copies of the instructions for prayer and contemplation on the eve of the attacks. They also did not have copies of the instructions for "opening your chest to God" at the moment of immolation, which were found in the luggage of Mohamed Atta, the hijackers' leader.
The muscle hijackers had arrived in the US only recently and had not had pilot training. They may have believed that the purpose of the hijacking was to free the perpetrators of previous extremist terrorist attacks on the United States or to provide "muscle" to overwhelm the passengers and crew. According to an audio recording of Osama Bin Laden 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 day of the attacks.
Some people, however, find it hard to believe that the muscle hijackers did not know they were on a suicide mission. They argue that the muscle hijackers were part of a terrorist organization that had previously carried out suicide attacks, such as the attack on the USS Cole. They also point out that the muscle hijackers knew that Osama bin Laden dealt in suicide attacks and that Khalid Sheikh Mohammed (KSM) wanted the planes to fly into buildings.
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The muscle hijackers were trained to help subdue pilots, passengers, and crew
The 9/11 attacks were carried out by 19 men affiliated with al-Qaeda, organised into four teams, each led by a pilot-trained hijacker. The remaining three or four members of each team were "muscle hijackers", whose role was to help subdue pilots, passengers, and crew.
The muscle hijackers were trained to overpower pilots, passengers, and crew, and allow the pilot hijackers to take control of the flights. They were chosen by Osama Bin Laden and al-Qaeda's military wing for their extensive knowledge of Western culture and language skills.
There is debate about whether the muscle hijackers knew they were on a suicide mission. The FBI concluded that the majority of them did not know, as they had not prepared wills or given other indications that they expected to die. They also did not have copies of the instructions for prayer and contemplation found in the luggage of Mohamed Atta, the hijackers' leader. However, some people argue that it is hard to believe that they would not have known, given that they were part of a terrorist organisation that had previously carried out suicide attacks.
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The muscle hijackers were chosen for their extensive knowledge of Western culture and language skills
The 9/11 attacks were carried out by 19 men affiliated with the jihadist organization al-Qaeda. These men 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.
The muscle hijackers' role was to overwhelm the passengers and crew and allow the pilot hijackers to take control of the flights. They were not in contact with the pilot hijackers and were not told the true nature of their mission until the day of the attacks. It is believed that they did not know they were on a suicide mission, as they did not leave messages for friends and family, nor did they have copies of the instructions for prayer and contemplation found in the luggage of Mohamed Atta, the man believed to be the hijackers' leader.
However, some people argue that the muscle hijackers must have known what the plan was, as they were part of a terrorist organization that had previously carried out suicide attacks, and any hijacking carries a high risk of death. Additionally, they were given handwritten instructions the night before the attacks, and surveillance photographs taken the previous night show Mr. Alomari grinning, suggesting he knew what was about to happen.
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Frequently asked questions
The FBI concluded that the majority of the muscle hijackers did not know they were on a suicide mission. Unlike the pilots, they had not prepared last wills and testaments or given other indications that they expected their lives to end.
Yes, the muscle hijackers knew that Osama bin Laden dealt in suicide attacks. They also knew that KSM wanted the planes to fly into buildings.
Even if the muscle hijackers did not know they were on a suicide mission, they must have anticipated death. Any hijacking results in a high risk of death.
The muscle hijackers were not in contact with the pilot hijackers and were not told the true nature of their mission until the day of the attacks.













