Remembering September 11, 2001: 18 years later
9/11 started off as a normal day and ended with tragedy. Little did anyone know, 19 terrorists would hijack four different planes after their departures from several different airports. Now, the 9/11 attacks are part of the history books. (Chris Hondros/Getty Images)Chris Hondros/Getty Images
5:45 a.m. - Hijackers go through the security screenings. Before 9/11, knives were allowed to be carried on planes if the blade was less than four inches. All the hijackers were carrying knives on them. (US Navy/Getty Images)U.S. Navy/Getty Images
7:49 a.m. - A plane takes off from the Boston Airport and headed towards Los Angeles. There were five hijackers on board of that plane, including 76 passengers and 11 crew members. (MGN Online)MGN Online
8:15 a.m. - Another flight from Boston takes off and was also heading towards Los Angeles. There were also five hijackers on this plane. There were also 51 passengers and nine crew members. (WSTM News/MGN Online)WSTM News
8:20 a.m. - Another flight going towards Los Angeles takes off from Washington Dulles International Airport. This flight had five hijacers, 53 passengers and six crew members. (NBC News/MGN Online)NBC News
8:24 a.m. - One hijacker, Mohammad Atta, was on Flight 11 and accidentally called air traffic control. A crew member on Flight 175 heard this call and informed the FAA, only to have his plane hijacked moments later. (David Friedman/Getty Images)David Friedman/Getty Images
8:37 a.m. - After hearing the lead hijacker, Atta, taking over Flight 11, the air traffic controllers in Boston informed the US Air Force (Boeing/MGN Online)Boeing
8:42 a.m. - The last flight, Flight 93, took off after a delay and headed towards San Francisco. This flight included four hijackers, 33 passengers and seven crew members. (Tim Boyle/Getty Images)Tim Boyle/Getty Images
8:46 a.m. - Flight 11 from American Airlines hit the North Tower. The plane hit between floors 93 and 99. The individuals on the plane and the individuals on those floors died instantly. The plane hitting where it did caused everyone above floor 91 to be trapped. (Jose Jimenez/Primera Hora/Getty Images)Jose Jimenez/Primera Hora/Getty Images
8:50 a.m. - President George W. Bush is informed of the attack in New York City. Bush had been visiting a school in Florida when he got the news from Andrew Card. (Doug Mills/AP)Doug Mills/AP
9:02 a.m. - Air traffic controllers spot a second plane heading towards the Twin Towers but are not able to stop it in time. (Graham Barclay/Getty Images)Graham Barclay/Getty Images
9:03 a.m. - Flight 175 from United Airlines hit the South Tower between floors 77 and 85. This crash instantly killed everyone on the plane and an unknown number of people between those floors. This trapped many above floor 85 and trapped many in elevators. (Spencer Platt/Getty Images)Spencer Platt/Getty Images
9:05 a.m. - President George W. Bush is informed of the second attack on the South Tower. Andrew Card, the White House chief of staff at the time, told the president about the second attack. (Doug Mills/AP)Doug Mills/AP
9:37 a.m. - Flight 77 from American Airlines crashed into the Pentagon. All people on the plane died. The crash also caused a fire and killed 125 military and civilian personnel. This attack also included the only person from Kentucky in the attacks to die. (Handout/Getty Images)Handout/Getty Images
9:42 a.m. - The FAA called for all planes in the nation to be grounded and they did not allow any more departures. (USAF/Getty Images)USAF/Getty Images
9:59 a.m. - The South Tower collapses after burning for almost an hour. It has been reported that over 800 people that were in the building or near the area died. (Richard Drew/AP)RICHARD DREW/AP
10:03 a.m. - It had been reported that Flight 93 crashed into a field in Pennsylvania. All passengers that were on the plane died. The plane had about 20 minutes before it would reach Washington D.C. Passengers on the plane struggled with hijackers, which caused the plane to crash in the field. (Keith Srakocic/AP)KEITH SRAKOCIC/AP
10:28 a.m. - The North Tower collapsed after burning for almost two hours. This caused more that 1,600 people to die. (Richard Drew/AP)RICHARD DREW/ASSOCIATED PRESS
5:20 p.m. - The 7 World Trade Center collapsed after being on fire four hours. Everyone was evacuated from the building and there were no deaths reported. (Pool/Getty Images)Pool/Getty Images
9/11 may be in the history books now, but people will always remember where they were when this attack happened. The attacked killed around 3,000 people and cleanup at Ground Zero took months. (J. David Ake/AP)J. David Ake/AP
Here you can find a photo of the 19 hijackers that were involved with the 9/11 attacks. (Getty Images)Getty Images/Getty Images