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The September 11 attacks, commonly known as 9/11, were four coordinated Islamist suicide terrorist attacks carried out by al-Qaeda against the United States on Tuesday, September11, 2001. That morning, 19 terrorists hijacked four commercial airliners scheduled to travel from the New England and Mid-Atlantic regions of the East Coast to California. The hijackers crashed the first two planes into the Twin Towers of the World Trade Center in New York City, two of the world's five-tallest buildings at the time, and aimed the next two flights toward targets in or near Washington, D.C. in an attack on the nation's capital. The third team succeeded in crashing into the Pentagon, the headquarters of the U.S. Department of Defense in Arlington County, Virginia, while the fourth plane crashed in rural Pennsylvania following a passenger revolt. The attacks killed nearly 3,000 people and instigated the multi-decade global war on terror.

The first impact was that of American Airlines Flight 11, which crashed into the North Tower of the World Trade Center complex in Lower Manhattan at 08:46. Sixteen minutes later, at 09:03, the World Trade Center's South Tower was hit by United Airlines Flight 175. Both 110-story skyscrapers collapsed within an hour and forty-one minutes, bringing about the destruction of the remaining five structures in the WTC complex, as well as damaging or destroying various other buildings surrounding the towers. A third flight, American Airlines Flight 77, crashed into the Pentagon at 09:37, causing a partial collapse. The fourth and final flight, United Airlines Flight 93, flew in the direction of the capital. Alerted to the previous attacks, the passengers retaliated in an attempt to take control of the aircraft, forcing the hijackers to crash the plane in a Stonycreek Township field, near Shanksville at 10:03 that morning. Investigators determined that Flight 93's target was either the United States Capitol or the White House.

Within hours of the attacks, the Central Intelligence Agency determined that al-Qaeda was responsible. The United States formally responded by launching the war on terror and invading Afghanistan to depose the Taliban, which rejected the conditions of U.S. terms to expel al-Qaeda from Afghanistan and extradite its leaders. The U.S.'s invocation of Article 5 of the North Atlantic Treaty—its only usage to date—called upon allies to fight al-Qaeda. As U.S. and NATO invasion forces swept through Afghanistan, al-Qaeda leader Osama bin Laden disappeared into the White Mountains, eluding captivity by western forces. Although bin Laden initially denied any involvement, in 2004 he formally claimed responsibility for the attacks. Al-Qaeda's cited motivations included U.S. support of Israel, the presence of U.S. military bases in Saudi Arabia and sanctions against Iraq. The nearly decade-long manhunt for bin Laden concluded on May 2, 2011 when he was killed during a U.S. military raid after being tracked down to his compound in Abbottabad, Pakistan. The war in Afghanistan continued for another eight years until the agreement was made in February 2020 for American and NATO troops to withdraw from the country, and the last members of the U.S. armed forces left the region on August 30, 2021, resulting in the return to power of the Taliban.

Not including the 19 hijackers, the attacks killed 2,977 people, injured thousands more and gave rise to substantial long-term health consequences while also generating at least $10 billion in infrastructure and property damage. It has been described by many as the deadliest terrorist act in human history and remains the deadliest incident for both firefighters and law enforcement personnel in the history of the United States, killing 340 and 72 from each organization. The loss of life stemming from the impact of Flight 11 secured its place as the most lethal plane crash in aviation history followed by the death toll incurred by Flight 175. The destruction of the World Trade Center and its environs seriously harmed the U.S. economy and induced global market shocks. Many other countries strengthened anti-terrorism legislation and expanded their powers of law enforcement and intelligence agencies. Cleanup of the World Trade Center site (colloquially "Ground Zero") took eight months and was completed in May 2002, while the Pentagon was repaired within a year. After delays in the design of a replacement complex, construction of the One World Trade Center began in November 2006; it opened in November 2014. Memorials to the attacks include the National September 11 Memorial & Museum in New York City, the Pentagon Memorial in Arlington County, Virginia, and the Flight 93 National Memorial at the Pennsylvania crash site.

Attacks[]

Flight paths of hijacked planes-September 11 attacks

Flight paths of the four hijacked planes used in the terrorist attacks on September 11, 2001

Early on the morning of September 11, 2001, nineteen hijackers took control of four commercial airliners (two Boeing 757s and two Boeing 767s) en route to California (three of them headed to LAX in Los Angeles and one to SFO in San Francisco) after takeoffs from Logan International Airport in Boston, Massachusetts; Newark Liberty International Airport in Newark, New Jersey; and Washington Dulles International Airport in Loudoun and Fairfax counties in Virginia. Large planes with long coast-to-coast flights were selected for hijacking because they would have more fuel.

The four flights were:

  • American Airlines Flight 11: a Boeing 767 aircraft, departed Logan Airport at 7:59 a.m. en route to Los Angeles with a crew of 11 and 76 passengers, not including five hijackers. The hijackers flew the plane into the northern façade of the North Tower of the World Trade Center in New York City at 8:46 a.m.
  • United Airlines Flight 175: a Boeing 767 aircraft, departed Logan Airport at 8:14 a.m. en route to Los Angeles with a crew of nine and 51 passengers, not including five hijackers. The hijackers flew the plane into the southern façade of the South Tower of the World Trade Center in New York City at 9:03 a.m.
  • American Airlines Flight 77: a Boeing 757 aircraft, departed Washington Dulles International Airport at 8:20 a.m. en route to Los Angeles with a crew of six and 53 passengers, not including five hijackers. The hijackers flew the plane into the western façade of the Pentagon in Arlington County, Virginia, at 9:37 a.m.
  • United Airlines Flight 93: a Boeing 757 aircraft, departed Newark International Airport at 8:42 a.m. en route to San Francisco, with a crew of seven and 33 passengers, not including four hijackers. As passengers attempted to subdue the hijackers, the aircraft crashed into a field in Stonycreek Township, Pennsylvania, near Shanksville, at 10:03 a.m.

Media coverage was extensive during the attacks and aftermath, beginning moments after the first crash into the World Trade Center.

Operator Flight number Aircraft type Time of departure* Time of crash* Departed from En route to Crash site Fatalities

(There were no survivors from the flights)

Crew Passengers Ground§ Hijackers Total
American Airlines 11 Boeing 767-223ER 7:59 a.m. 8:46 a.m. Logan International Airport Los Angeles International Airport North Tower of the World Trade Center, floors 93 to 99 11 76 2,606 5 2,763
United Airlines 175 Boeing 767–222 8:14 a.m. 9:03 a.m. Logan International Airport Los Angeles International Airport South Tower of the World Trade Center, floors 77 to 85 9 51 5
American Airlines 77 Boeing 757–223 8:20 a.m. 9:37 a.m. Washington Dulles International Airport Los Angeles International Airport West wall of Pentagon 6 53 125 5 189
United Airlines 93 Boeing 757–222 8:42 a.m. 10:03 a.m. Newark Int'l Airport San Francisco International Airport Field in Stonycreek Township near Shanksville 7 33 0 4 44
Totals 33 213 2,731 19 2,996

* Eastern Daylight Time (UTC−04:00)

Excluding hijackers

§ Including emergency workers

Including hijackers

The Four crashes[]

At 7:59 a.m., American Airlines Flight 11 took off from Logan International Airport in Boston. Fifteen minutes into the flight, five hijackers armed with boxcutters took over the plane, injuring at least three people (and possibly killing one) before forcing their way into the cockpit. The terrorists also displayed an apparent explosive device in order to frighten the hostages into submission, while additionally spraying mace into the cabin to further hinder any efforts to resist. Back at Logan, United Airlines Flight 175 took off at 8:14 a.m., more or less the same time as Flight 11's hijacking. Hundreds of miles southwest at Dulles International Airport in Fairfax and Loudoun Counties, Virginia, American Airlines Flight 77 left the runway at 8:20 a.m. Flight 175's journey proceeded normally for 28 minutes until 8:42 a.m., when another group of five hijacked the plane, murdering both pilots and stabbing several crew members before assuming control of the aircraft. As was the case with Flight 11, the hijackers used bomb threats to instill fear into the passengers and crew and sprayed chemical weapons to disable any opposition. Concurrently, United Airlines Flight 93 departed from Newark International Airport in New Jersey; originally scheduled to pull away from the gate at 8:00 a.m., the plane was running 42 minutes late.

At 8:46 a.m., Flight 11 became the first plane to reach its target when it was deliberately crashed into the north face of the World Trade Center's North Tower (1 WTC), although the initial presumption by many was that this was merely an accident. At 8:51 a.m., shortly after the North Tower was struck and only minutes following the hijacking of Flight 175, American Airlines Flight 77 was also taken over by another group of five who forcibly entered the cockpit 31 minutes after takeoff. Although the hijackers were equipped with knives, there were no reports of anyone on board actually being stabbed unlike the first two planes, nor did the two people who made phone calls mention the use of mace or a bomb threat of any kind. Seventeen minutes after the first plane crashed into the North Tower, Flight 175 was flown into the South Tower's southern facade (2 WTC) at 9:03 a.m., instantly proving to the entire world that the first crash was not an accident but that a terrorist attack was underway. After waiting 46 minutes to make their move—a holdup that proved disastrous for the terrorists when combined with the delayed takeoff from the runway—four men aboard Flight 93 struck suddenly, killing at least one passenger before storming the cockpit and seizing control of the plane at 9:28 a.m., turning the plane eastbound and setting course for Washington, D.C. Much like their counterparts on the first two flights, the fourth team also used bomb threats to get their way and again filled the cabin with mace. Nine minutes after Flight 93's hijacking, Flight 77 was crashed into the west side of The Pentagon. Because of the two delays, the passengers and crew of Flight 93 had time to be made aware of the previous attacks through phone calls to the ground. Knowing their lives were forfeited rendered the bomb threat moot, and an uprising was hastily organized in the hopes of taking control of the aircraft, with an assault on the hijackers being launched at 9:57 a.m. Within minutes, they had fought their way to the front of the cabin and began breaking down the cockpit door. Fearing their captives would gain the upper hand, the hijackers rolled the plane and pitched it into a nosedive, crashing into a field near Shanksville, Pennsylvania, southeast of Pittsburgh, at 10:03 a.m. The plane was around twenty minutes away from reaching D.C. at the time of the crash, and its target is believed to have been either the Capitol Building or the White House.

Some passengers and crew members who called from the aircraft using the cabin air phone service and mobile phones provided details: several hijackers were aboard each plane; they used mace, tear gas, or pepper spray to overcome attendants; and some people aboard had been stabbed. Reports indicated hijackers stabbed and killed pilots, flight attendants, and one or more passengers. According to the 9/11 Commission's final report, the hijackers had recently purchased multi-function hand tools and assorted Leatherman-type utility knives with locking blades (which were not forbidden to passengers at the time), but were not found among the possessions left behind by the hijackers. A flight attendant on Flight 11, a passenger on Flight 175, and passengers on Flight 93 said the hijackers had bombs, but one of the passengers said he thought the bombs were fake. The FBI found no traces of explosives at the crash sites, and the 9/11 Commission concluded that the bombs were probably fake. On at least two of the hijacked flights―American 11 and United 93―the terrorists tried to ensure nobody would resist by claiming over the PA system that they were taking hostages and were returning to the airport to have a ransom demand met, an obvious attempt to deceive those on-board into staying put by way of a false hope. Both of these attempts fell on deaf ears, however, as the hijacker pilots in both instances (Mohamed Atta and Ziad Jarrah, respectively) keyed the wrong switch and mistakenly transmitted their messages to ATC instead of the people on the plane as intended, in the process tipping off the flight controllers that the planes had been hijacked.

Three buildings in the World Trade Center collapsed due to fire-induced structural failure. Although the South Tower was struck 16 minutes after the North Tower, the plane's impact zone was far lower and into a corner, with the unevenly-balanced additional structural weight causing it to collapse first at 9:58 a.m., having burned for 55 minutes in the fire caused by the crash of United Airlines Flight 175 and the explosion of its fuel. The North Tower lasted another 29 minutes before collapsing at 10:28 a.m., one hour and forty-one minutes after being struck by American Airlines Flight 11. When the North Tower collapsed, debris fell on the nearby 7 World Trade Center building (7 WTC), damaging the building and starting fires. These fires burned for nearly seven hours, compromising the building's structural integrity, and 7 WTC collapsed at 5:21 p.m. The west side of The Pentagon sustained significant damage.

At 9:42 a.m., the Federal Aviation Administration (FAA) grounded all civilian aircraft within the continental U.S., and civilian aircraft already in flight were told to land immediately. All international civilian aircraft were either turned back or redirected to airports in Canada or Mexico, and were banned from landing on United States territory for three days. The attacks created widespread confusion among news organizations and air traffic controllers. Among the unconfirmed and often contradictory news reports aired throughout the day, one of the most prevalent said a car bomb had been detonated at the U.S. State Department's headquarters in Washington, D.C. Another jet (Delta Air Lines Flight 1989) was suspected of having been hijacked, but the aircraft responded to controllers and landed safely in Cleveland, Ohio.


In an April 2002 interview, Khalid Sheikh Mohammed and Ramzi bin al-Shibh, who are believed to have organized the attacks, said Flight 93's intended target was the United States Capitol, not the White House. During the planning stage of the attacks, Mohamed Atta (Flight 11's hijacker and pilot) thought the White House might be too tough a target and sought an assessment from Hani Hanjour (who hijacked and piloted Flight 77). Mohammed said al-Qaeda initially planned to target nuclear installations rather than the World Trade Center and The Pentagon, but decided against it, fearing things could "get out of control". Final decisions on targets, according to Mohammed, were left in the hands of the pilots. If any pilot could not reach his intended target, he was to crash the plane.

Aftermath[]

Main article: Aftermath of the September 11 attacks

Health issues[]

Main article: Health effects arising from the September 11 attacks

FEMA - 4235 - Photograph by Andrea Booher taken on 09-28-2001 in New York

The aftermath of the September 11th attacks.

Hundreds of thousands of tons of toxic debris containing more than 2,500 contaminants, including known carcinogens, were spread across Lower Manhattan due to the Twin Towers' collapse. Exposure to the toxins in the debris is alleged to have contributed to fatal or debilitating illnesses among people who were at Ground Zero. The Bush administration ordered the Environmental Protection Agency (EPA) to issue reassuring statements regarding air quality in the aftermath of the attacks, citing national security, but the EPA did not determine that air quality had returned to pre-September 11 levels until June 2002.

Health effects extended to residents, students, and office workers of Lower Manhattan and nearby Chinatown. Several deaths have been linked to the toxic dust, and the victims' names were included in the World Trade Center memorial. Approximately 18,000 people have been estimated to have developed illnesses as a result of the toxic dust. There is also scientific speculation that exposure to various toxic products in the air may have negative effects on fetal development. A notable children's environmental health center is currently[when?] analyzing the children whose mothers were pregnant during the WTC collapse and were living or working nearby. A study of rescue workers released in April 2010 found that all those studied had impaired lung functions, and that 30%–40% were reporting little or no improvement in persistent symptoms that started within the first year of the attack.

Years after the attacks, legal disputes over the costs of illnesses related to the attacks were still in the court system. On October 17, 2006, a federal judge rejected New York City's refusal to pay for health costs for rescue workers, allowing for the possibility of numerous suits against the city. Government officials have been faulted for urging the public to return to lower Manhattan in the weeks shortly after the attacks. Christine Todd Whitman, administrator of the EPA in the attacks' aftermath, was heavily criticized by a U.S. District Judge for incorrectly saying that the area was environmentally safe. Mayor Giuliani was criticized for urging financial industry personnel to return quickly to the greater Wall Street area.

On December 22, 2010, the United States Congress passed the James L. Zadroga 9/11 Health and Compensation Act, which President Barack Obama signed into law on January 2, 2011. It allocated $4.2 billion to create the World Trade Center Health Program, which provides testing and treatment for people suffering from long-term health problems related to the 9/11 attacks. The WTC Health Program replaced preexisting 9/11-related health programs such as the Medical Monitoring and Treatment Program and the WTC Environmental Health Center program.

In 2020, the NYPD confirmed that 247 NYPD police officers had died due to 9/11-related illnesses. In September 2022, the FDNY confirmed that the total number of firefighters that died due to 9/11-related illnesses was 299. Both agencies believe that the death toll will rise dramatically in the coming years. The Port Authority of New York and New Jersey Police Department (PAPD), the law enforcement agency with jurisdiction over the World Trade Center due to the Port Authority of New York and New Jersey owning the site confirmed that four of its police officers have died of 9/11-related illnesses. The chief of the PAPD at the time, Joseph Morris, made sure that industrial-grade respirators were provided to all PAPD police officers within 48 hours and decided that the same 30 to 40 police officers would be stationed at the World Trade Center pile, drastically lowering the number of total PAPD personnel who would be exposed to the air. The FDNY and NYPD had rotated hundreds, if not thousands, of different personnel from all over New York City to the pile, which exposed many of them to dust that would give them cancer or other diseases years or decades later. Also, they weren't given adequate respirators and breathing equipment that could have prevented future diseases.

Perpetrator[]

There were 19 people was hijack. T of 9/11 there were

  • 15 people from Saudi Arabia
  • 2 people from United Arab Emirates
  • 1 person from Egypt and Lebanon
  • 4 people from (Likely Saudi Arabia) (Flight 23)

The Planes[]

There were 4 planes hijacked during 9/11. These planes were:

  • American Airlines Flight 11 (Took off at 7:59)
  • United Airlines Flight 175 (Took off at 8:14)
  • American Airlines Flight 77 (Took off at 8:20)
  • United Airlines Flight 93 (Took off at 8:42)
  • United Airlines Flight 23 (Didn't Take Off)
  • (Other aircrafts, possibly)

Places Attacked[]

The Pentagon (dead)

The Pentagon, where the American Airlines flight 77 into.

  • World Trade Center (8:46 north, 9:03 south) 5 got the fuselage section from United Airlines 175 falling into its roof.
  • The Pentagon (US Military Headquarters): 9:34 AM
  • The fourth plane was taken back by the passengers, where it crashed in Shanksville, Pennsylvania (10:03). The plane was currently on the course for Washington, D.C, where it would have likely hit the White House.
  • The fifth plane never took off, it was likely going to hit the US Capitol Building.

Patriot Day[]

9/11 will never be forgotten....

September-112020

In Honor of Patriot day, you can dress in red, white, or blue.

In the United States, Patriot Day occurs on September 11 of each year in memory of the people killed in the September 11 attacks of the year 2001. In the immediate aftermath of the attacks, carried out by terrorists from Al-Qaeda, President George W. Bush proclaimed Friday, September 14, 2001, as a National Day of Prayer and Remembrance for the Victims of the Terrorist Attacks on September 11, 2001. A bill to make September 11 a national day of mourning was introduced in the U.S. House on October 25, 2001, by Rep. Vito Fossella (R-NY) with 22 co-sponsors. The result was the resolution to proclaim September 11, 2002, as the first Patriot Day. From 2009 to 2016, President Barack Obama proclaimed September 11 as Patriot Day and National Day of Service and Remembrance, in observance of Pub. L. 111–13, the Edward M. Kennedy Serve America Act. In 2017, President Donald Trump proclaimed September 8–10 as National Days of Prayer and Remembrance, and proclaimed September 11 as Patriot Day. President Trump also did so in 2018, 2019, and 2020 as well. After Joe Biden was elected president in 2021, he also issued an Executive Order for Patriot Day 2021 and Patriot Day 2022.

Part of this article consists of modified text from Wikipedia, and the article is therefore licensed under Creative Commons license. The original article is found here and its history here.
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