On Sept. 11, 2001, four U.S. airliners were highjacked in a coordinated attack by the terrorist organization al-Qaeda against the United States, crashing into the Twin Towers of the World Trade Center in New York, the Pentagon in Washington D.C. and an area outside of Shanksville, Penn. As a result, 2,977 people were killed and our nation was brought into war. Take a look back at harrowing photos from that day, and the days after, in what has been called the worst terrorist attack in American history.
![Two planes were hijacked and crashed into the North and South Towers of the World Trade Center in New York, claiming 2,977 victims between all of the attacks that day. Two planes were hijacked and crashed into the North and South Towers of the World Trade Center in New York, claiming 2,977 victims between all of the attacks that day.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/QDDJTILMFQL3CYBBNL76TZFHXA.jpg)
![While the North Tower of the World Trade Center was burning, a second hijacked plane, United Airlines Flight 175, neared the South Tower of the complex. While the North Tower of the World Trade Center was burning, a second hijacked plane, United Airlines Flight 175, neared the South Tower of the complex.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/2LMD3ZT7SWJXS2JGYKIDTNTDTQ.jpg)
![At 9:03 a.m. local time, the second plane flew directly into the South Tower of the World Trade Center. By this time, all eyes were on the already burning North Tower of the complex as photographers were able to capture the horrid moment of impact. At 9:03 a.m. local time, the second plane flew directly into the South Tower of the World Trade Center. By this time, all eyes were on the already burning North Tower of the complex as photographers were able to capture the horrid moment of impact.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/7DW5OB5D7ROGKLB7GPMENCGFOY.jpg)
![Smoke, flames and debris erupt from the South Tower as United Airlines Flight 175 hits. This flight was on route from Logan International Airport in Boston, Mass. to Los Angeles International Airport in California, the same path as the other plane that struck the North Tower. Smoke, flames and debris erupt from the South Tower as United Airlines Flight 175 hits. This flight was on route from Logan International Airport in Boston, Mass. to Los Angeles International Airport in California, the same path as the other plane that struck the North Tower.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/R7SXBXTZ6QPCTMWGDLHBDODC34.jpg)
![New York Daily News photographer David Handschuh captured the moment that a fireball erupted from 2 World Trade Center after United Airlines Flight 175 slammed into the south side of the building. Handschuh was injured on the scene, but survived the horrid attacks. New York Daily News photographer David Handschuh captured the moment that a fireball erupted from 2 World Trade Center after United Airlines Flight 175 slammed into the south side of the building. Handschuh was injured on the scene, but survived the horrid attacks.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/F6UVWKRRRHF36TA7NKIUDMH5GA.jpg)
![Another image shows the moment the second flight flew into the South Tower of the World Trade Center on Sept. 11, 2001. Another image shows the moment the second flight flew into the South Tower of the World Trade Center on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/6HQUDC4O24JL32IVLVI3WUFZ6M.jpg)
![The Twin Towers burn under the massive jet-fuel explosions of the two direct hits by hijacked airplanes. The Twin Towers burn under the massive jet-fuel explosions of the two direct hits by hijacked airplanes.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/C4SYGX2BXVDGLFLKETF27GBOPY.jpg)
![Because of being hit lower on the building, the South Tower collapsed first after burning for 56 minutes. At 10:28 a.m., the North Tower also collapsed after burning for 102 minutes. The collapse of the North Tower caused debris to fall onto 7 World Trade Center, damaging it and causing fires before also collapsing later in the day. Because of being hit lower on the building, the South Tower collapsed first after burning for 56 minutes. At 10:28 a.m., the North Tower also collapsed after burning for 102 minutes. The collapse of the North Tower caused debris to fall onto 7 World Trade Center, damaging it and causing fires before also collapsing later in the day.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/CYVFCOPGKGZWU4BESDBXLLHJAA.jpg)
![As the towers came down, streets of Manhattan filled with smoke and debris as pedestrians ran away from the scene of the deadly attack. Immediately following news of the attack, the Federal Aviation Administration grounded all aircraft within the continental U.S. and planes were not allowed to fly into U.S. territory for three days. As the towers came down, streets of Manhattan filled with smoke and debris as pedestrians ran away from the scene of the deadly attack. Immediately following news of the attack, the Federal Aviation Administration grounded all aircraft within the continental U.S. and planes were not allowed to fly into U.S. territory for three days.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/5I6XWKU74VFQL3COL2CADBO3TQ.jpg)
![On the morning of Sept. 11, 2001, President George W. Bush was attending an early morning school reading event at Emma E. Booker Elementary School in Sarasota, Fla. when he was told of the attacks. This iconic photo shows Bush's reaction as his Chief of Staff Andrew Card whispers into his ear informing him of the attacks on the World Trade Center. On the morning of Sept. 11, 2001, President George W. Bush was attending an early morning school reading event at Emma E. Booker Elementary School in Sarasota, Fla. when he was told of the attacks. This iconic photo shows Bush's reaction as his Chief of Staff Andrew Card whispers into his ear informing him of the attacks on the World Trade Center.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/VGYET2J4FFTS436LCCGFJ4WYTM.jpg)
![The Statue of Liberty stands in the foreground as thick smoke billows into the sky from the area where the World Trade Center stood. The Statue of Liberty stands in the foreground as thick smoke billows into the sky from the area where the World Trade Center stood.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/RVJ2RSTRSVZ45CWST6ROC4R464.jpg)
![This view is from uptown Manhattan as the Twin Towers of the World Trade Center burn after the terrorist attacks. This view is from uptown Manhattan as the Twin Towers of the World Trade Center burn after the terrorist attacks.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/GMKBVYML3ZUNQTIZ3BPJ3RNJCY.jpg)
![Immediately following the first plane crash, nearly every first responder rushed to the scene of the attack to help those in need. The New York City Fire Department deployed more than 200 units to the World Trade Center. Many off-duty firefighters and emergency medical technicians also helped in the efforts. Here, firefighters make their way through the rubble once both towers collapsed on Sept. 11, 2001. Immediately following the first plane crash, nearly every first responder rushed to the scene of the attack to help those in need. The New York City Fire Department deployed more than 200 units to the World Trade Center. Many off-duty firefighters and emergency medical technicians also helped in the efforts. Here, firefighters make their way through the rubble once both towers collapsed on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/75FNI3QEPZH4MOOXSMOI6FNY5Y.jpg)
![People in front of New York's St. Patrick's Cathedral react with horror as they look down Fifth Ave. toward the World Trade Center towers after two planes crashed into their upper floors. People in front of New York's St. Patrick's Cathedral react with horror as they look down Fifth Ave. toward the World Trade Center towers after two planes crashed into their upper floors.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/KZ6OYKERVS7NBPR2NP6OMGMFF4.jpg)
![Edward Fine covers his mouth as he walks through the debris after the collapse of one of the World Trade Center towers. The streets filled with ash and debris following the collapse of the towers, making it difficult to breathe. Edward Fine covers his mouth as he walks through the debris after the collapse of one of the World Trade Center towers. The streets filled with ash and debris following the collapse of the towers, making it difficult to breathe.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/TFPSWHXQRINRVJ7C7YQTOM7SPM.jpg)
![Two women hold each other as they watch the World Trade Center burn following a terrorist attack on the twin skyscrapers in New York on Tuesday, Sept. 11, 2001. Two women hold each other as they watch the World Trade Center burn following a terrorist attack on the twin skyscrapers in New York on Tuesday, Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/WXG7P2BNWOE26B7MBFWHI2QLMY.jpg)
![People run away as the North Tower of World Trade Center collapses on Sept. 11, 2001. That day, 2,977 people were lost from the four highjacked plane attacks, including 246 passengers and crew. People run away as the North Tower of World Trade Center collapses on Sept. 11, 2001. That day, 2,977 people were lost from the four highjacked plane attacks, including 246 passengers and crew.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/WVKY7ZOQB4QGMVS663STDLHPU4.jpg)
![People flood the Brooklyn Bridge in an attempt to flee a smoky Lower Manhattan following the attacks on Sept. 11, 2001. People flood the Brooklyn Bridge in an attempt to flee a smoky Lower Manhattan following the attacks on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/KOQT3OHAUVZFTZRPIZEDVZ7L4A.jpg)
![New York Daily News staff photographer David Handschuh is carried from the site after his leg was shattered by falling debris while he was photographing the terrorist attack on the World Trade Center on Sept. 11, 2001, in New York. New York Daily News staff photographer David Handschuh is carried from the site after his leg was shattered by falling debris while he was photographing the terrorist attack on the World Trade Center on Sept. 11, 2001, in New York.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/M2423TTRG2VYPENLB6RAFFBCDI.jpg)
![Pedestrians wearing masks leave Lower Manhattan for safer ground after the Twin Towers collapsed. Pedestrians wearing masks leave Lower Manhattan for safer ground after the Twin Towers collapsed.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/UGMECCMQ6VF2R5YSVT3PARSBJU.jpg)
![Marcy Borders is covered in dust as she takes refuge in an office building after one of the World Trade Center towers collapsed in New York. Borders was on the street as the cloud of smoke and dust enveloped the area. Marcy Borders is covered in dust as she takes refuge in an office building after one of the World Trade Center towers collapsed in New York. Borders was on the street as the cloud of smoke and dust enveloped the area.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/ONSB27UZT4N5NQJWZ5KY7DK6PA.jpg)
![New York City firefighters hug each other during rescue operations at the World Trade Center on Sept. 11, 2001. Three hundred and forty-three firefighters died trying to save people during the harrowing attacks that day. Since then, 200 more have died from Ground Zero-related illnesses. New York City firefighters hug each other during rescue operations at the World Trade Center on Sept. 11, 2001. Three hundred and forty-three firefighters died trying to save people during the harrowing attacks that day. Since then, 200 more have died from Ground Zero-related illnesses.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/AXBWKCCNUOXIH3MO223QICHEP4.jpg)
![A businessman covered in dust and ash walks in the streets near the World Trade Center after the Twin Towers collapsed on Sept. 11, 2001. A businessman covered in dust and ash walks in the streets near the World Trade Center after the Twin Towers collapsed on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/MXVEYQPMDR33VTDRUXXTC7A5Q4.jpg)
![Later that day, President George W. Bush addresses the nation from his desk in the Oval Office about the terrorist attacks on New York and Washington, D.C. on Sept. 11, 2001. Later that day, President George W. Bush addresses the nation from his desk in the Oval Office about the terrorist attacks on New York and Washington, D.C. on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/C2PN2SMQLAGU6KCKVPX27RX2RA.jpg)
![This iconic photo shows Brooklyn firefighters from left, George Johnson, of Ladder 157, Dan McWilliams, of Ladder 157, and Billy Eisengrein, of Rescue 2, as they raise an American flag at Ground Zero on Sept. 11, 2001. This iconic photo shows Brooklyn firefighters from left, George Johnson, of Ladder 157, Dan McWilliams, of Ladder 157, and Billy Eisengrein, of Rescue 2, as they raise an American flag at Ground Zero on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/IXSVVRIEY7XWHBRICKETDQ6PBY.jpg)
![Dust and debris cloud the air near the site of the World Trade Center following the attacks on Sept. 11, 2001. Dust and debris cloud the air near the site of the World Trade Center following the attacks on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/5VGIG5RQYQXW37HVPRURT4SBOM.jpg)
![Firefighters take a break at the remains of the Twin Towers after their collapse on Sept. 11, 2001. More than ten years later, One World Trade Center would finally open as well as a memorial to all of those lost due to that tragic day. Firefighters take a break at the remains of the Twin Towers after their collapse on Sept. 11, 2001. More than ten years later, One World Trade Center would finally open as well as a memorial to all of those lost due to that tragic day.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/LM3QX7ABC3QUEP47I5PFTVFJ5A.jpg)
![The carnage wasn't limited to New York City. Flames and smoke pour from a building at the Pentagon in Washington D.C. on Sept. 11, 2001, after a direct, devastating hit from another hijacked airplane. American Airlines flight 77 crashed into the building, killing 125 people inside the Pentagon and all 64 passengers and crew on that plane. The carnage wasn't limited to New York City. Flames and smoke pour from a building at the Pentagon in Washington D.C. on Sept. 11, 2001, after a direct, devastating hit from another hijacked airplane. American Airlines flight 77 crashed into the building, killing 125 people inside the Pentagon and all 64 passengers and crew on that plane.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/STF5MG4EGIDR72S2EQ7MOQ7VME.jpg)
![As the sun sets in New York City on Sept. 11, 2001, smoke from Ground Zero continues to fill the sky on the worst day in New York City history. As the sun sets in New York City on Sept. 11, 2001, smoke from Ground Zero continues to fill the sky on the worst day in New York City history.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/UNHNLJQSZXJQHRBJCYBKCGPCHY.jpg)
![Capt. Michael Dugan hangs an American flag from a light pole in front of the wreckage of the World Trade Center after an exhausting day on Sept. 11, 2001. Capt. Michael Dugan hangs an American flag from a light pole in front of the wreckage of the World Trade Center after an exhausting day on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/HZXKRHKECRDAZBJNVH5E4AMLRM.jpg)
![A firefighter breaks down after the World Trade Center buildings collapsed Sept. 11, 2001, after two hijacked airplanes slammed into the Twin Towers in a terrorist attack. A firefighter breaks down after the World Trade Center buildings collapsed Sept. 11, 2001, after two hijacked airplanes slammed into the Twin Towers in a terrorist attack.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/GYLWCTSKMQXUCY3Z772AOFBZSA.jpg)
![Four days later on Sept. 15, 2001, smoke continues to rise from the site of the World Trade Center following the deadly terrorist attacks. The site was later named Ground Zero since nothing remained but a pile of rubble. Four days later on Sept. 15, 2001, smoke continues to rise from the site of the World Trade Center following the deadly terrorist attacks. The site was later named Ground Zero since nothing remained but a pile of rubble.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/ZHWRBV3FZSJSZSYGGYAVILEDBQ.jpg)
![An exhausted firefighter rests on Broadway during the search for survivors after the terrorist attacks at the World Trade Center. An exhausted firefighter rests on Broadway during the search for survivors after the terrorist attacks at the World Trade Center.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/KOXAMVMEIYLZKDASTD5BHYXUDA.jpg)
![In the days that followed, hundreds of missing person reports were filed for those in the area during the 9/11 terrorist attacks on the World Trade Center in New York City. Here, a woman looks at missing person posters on Sept. 14, 2001, on a wall near the site of the attacks. In the days that followed, hundreds of missing person reports were filed for those in the area during the 9/11 terrorist attacks on the World Trade Center in New York City. Here, a woman looks at missing person posters on Sept. 14, 2001, on a wall near the site of the attacks.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/K7LXYOKAKJYVWDHPOTJ6YGOSJI.jpg)
![President Bush greets New York City Mayor Rudolph Giuliani, left, and N.Y. Gov. Pataki, right, at McGuire Air Force Base in New Jersey on Sept. 14, 2001. On the day of the attacks, Giuliani stated, President Bush greets New York City Mayor Rudolph Giuliani, left, and N.Y. Gov. Pataki, right, at McGuire Air Force Base in New Jersey on Sept. 14, 2001. On the day of the attacks, Giuliani stated,](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/AW47LD6VJTFI7BN5EE5HVPNHQQ.jpg)
![A wall of dust and smoke races through streets framed by St. Paul's Chapel, left, and the Astor Building, right, as the top of one of World Trade Center towers collapses after two planes crashed into the buildings on Sept. 11, 2001. A wall of dust and smoke races through streets framed by St. Paul's Chapel, left, and the Astor Building, right, as the top of one of World Trade Center towers collapses after two planes crashed into the buildings on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/SRGN4FQPNPBFQHV2K4ZBHAFOOE.jpg)
![Kent Olson and his dog, Thunder, from Lakewood, Wash. search through the rubble on Sept. 21, 2001, for victims of the 9/11 terrorist attacks at the World Trade Center in New York City. Kent Olson and his dog, Thunder, from Lakewood, Wash. search through the rubble on Sept. 21, 2001, for victims of the 9/11 terrorist attacks at the World Trade Center in New York City.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/7L77HPPWTQHCRCWKZT7IURNS5Y.jpg)
![New York City firefighters and a photojournalist work at the World Trade Center after two hijacked planes crashed into the Twin Towers on Sept. 11, 2001, in New York City. New York City firefighters and a photojournalist work at the World Trade Center after two hijacked planes crashed into the Twin Towers on Sept. 11, 2001, in New York City.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/3SWS25CSJMLSGYH34PMXRIVUAQ.jpg)
![Firefighters make their way south from Broadway and Fulton Street, a few blocks from the World Trade Center site, through rubble and debris on Sept. 11, 2001, after the collapse of one of the World Trade Center towers. Firefighters make their way south from Broadway and Fulton Street, a few blocks from the World Trade Center site, through rubble and debris on Sept. 11, 2001, after the collapse of one of the World Trade Center towers.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/ZGQOCXQCOQRCYX37AY3DCTQZNY.jpg)
![A satellite image of Lower Manhattan shows smoke and ash rising from the site of the World Trade Center at 11:43 a.m. on Sept. 12, 2001, in New York City. A satellite image of Lower Manhattan shows smoke and ash rising from the site of the World Trade Center at 11:43 a.m. on Sept. 12, 2001, in New York City.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/OPFIAIIISCT444BQM6XXDHOC5E.jpg)
![U.S. Secret Service Agent Thomas Armas carries an injured woman to an ambulance after One World Trade Center collapsed. U.S. Secret Service Agent Thomas Armas carries an injured woman to an ambulance after One World Trade Center collapsed.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/BGWQQ2GYCHSJM37EQMX5DN3GLY.jpg)
![A New York City fireman calls for 10 more rescue workers to make their way into the rubble of the World Trade Center on Sept. 14, 2001, days after the Sept. 11, 2001 terrorist attack. A New York City fireman calls for 10 more rescue workers to make their way into the rubble of the World Trade Center on Sept. 14, 2001, days after the Sept. 11, 2001 terrorist attack.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/4NE34TLYF6IUBK6LR2VGKQE3HE.jpg)
![A piece of debris, possibly from one of the crashed airliners, is roped off by investigators near the World Trade Center site on Sept. 11, 2001. A piece of debris, possibly from one of the crashed airliners, is roped off by investigators near the World Trade Center site on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/UFKVSVKJ6QCU5RAS57OP7IQPOA.jpg)
![The date of the terrorist attacks on the World Trade Center is shown on a calendar covered in ash on a counter at the Chase Manhattan Bank on Broadway on Sept. 20, 2001, about a block from the World Trade Center site in New York. The date of the terrorist attacks on the World Trade Center is shown on a calendar covered in ash on a counter at the Chase Manhattan Bank on Broadway on Sept. 20, 2001, about a block from the World Trade Center site in New York.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/FDTU4N7Y6QQ5CYJPAGJDK73JKY.jpg)
![Rubble and ash fill streets in Lower Manhattan after two hijacked airliners crashed into the World Trade Center Twin Towers in New York on Sept. 11, 2001. The planes crashed into the upper floors of both World Trade Center towers minutes apart, collapsing the 110-story buildings. Rubble and ash fill streets in Lower Manhattan after two hijacked airliners crashed into the World Trade Center Twin Towers in New York on Sept. 11, 2001. The planes crashed into the upper floors of both World Trade Center towers minutes apart, collapsing the 110-story buildings.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/OWS3G7KBJSKWIBGKTEE3ZW73FM.jpg)
![People emerge from plumes of dust as they run from the collapse of World Trade Center towers in New York on Sept. 11, 2001, after terrorists crashed two hijacked airliners into the World Trade Center and brought down the twin 110-story towers. People emerge from plumes of dust as they run from the collapse of World Trade Center towers in New York on Sept. 11, 2001, after terrorists crashed two hijacked airliners into the World Trade Center and brought down the twin 110-story towers.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/YKA62SRJVNHCD2RTUAWYARRYGU.jpg)
![Pedestrians flee the area of the World Trade Center in Lower Manhattan following a terrorist attack on the New York landmark on Sept. 11, 2001. Pedestrians flee the area of the World Trade Center in Lower Manhattan following a terrorist attack on the New York landmark on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/GSU2XWHZIKFIALEUGNZD7TOJOA.jpg)
![Police officers and civilians run away from New York's World Trade Center after an additional explosion rocked the buildings on Sept. 11, 2001. Police officers and civilians run away from New York's World Trade Center after an additional explosion rocked the buildings on Sept. 11, 2001.](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/SGYMYI5NYRVQEBXHCT2NOYK3EM.jpg)
![The next day, the front page of the New York Daily news read The next day, the front page of the New York Daily news read](https://www.nydailynews.com/wp-content/uploads/migration/2022/09/10/B76CTVMCI3OBB7PQ3PT2IFC6U4.jpg)