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terrorist hijack four airplanes to attack the U.S resulting in hundreds of deaths
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George W Bush creates the department of homeland security which is a department of the U.S federal government which is for public security
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often referred to as the coalition forces, was a military command during the 2003 invasion of Iraq and much of the ensuing Iraq War, led by the United States of America, United Kingdom, Australia, Spain and Poland, responsible for conducting and handling military operations.
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arrest of terrorist plotting to bomb shopping mall in Columbus
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On November 5, 2009, a mass shooting took place at Fort Hood, near Killeen, Texas. Nidal Hasan, a U.S. Army major and psychiatrist, fatally shot 13 people and injured more than 30 others. The shooting produced more casualties than any other on an American military base.
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On April 15, 2013, two homemade bombs detonated 12 seconds and 210 yards (190 m) apart at 2:49 p.m., near the finish line of the annual Boston Marathon, killing three people and injuring several hundred others, including 16 who lost limbs.[2][4][9]
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On June 12, 2016, Omar Mateen, a 29-year-old security guard, killed 49 people and wounded 58 others in a terrorist attack/hate crime inside Pulse, a gay nightclub in Orlando, Florida,
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On 22 May 2017, a suicide bombing was carried out at Manchester Arena in Manchester, England, after a concert by American singer Ariana Grande. The attacker was identified by police as Salman Ramadan Abedi, a 22-year-old British-born citizen of Libyan descent who detonated an improvised explosive device as concertgoers were leaving the arena. He killed 23 people, including himself, and injured around 120 others.