19 terrorists hijacked U S commercial passenger jets. At 8:45 a.m. on a clear Tuesday morning, an American Airlines Boeing 767 loaded with 20,000 gallons of jet fuel, crashed into the north tower of the World Trade Center in New York City.The impact left a gaping, burning hole near the 80th floor of the 110-story skyscraper, instantly killing hundreds of people and trapping hundreds more in higher floors.
Jet fuel from the Boeing 757 caused a devastating inferno that led to the structural collapse of a portion of the giant concrete building, which is the headquarters of the U.S. Department of Defense.All told, 125 military personnel and civilians were killed in the Pentagon, along with all 64 people aboard the airliner.
The third plane flew into to the Pentagon. Just outside Washington, D.C .
40 in Pennsylvania (where one of the hijacked planes crashed after the passengers attempted to retake the plane)
The 19 terrorists easily smuggled box-cutters and knives through security at three East Coast airports and boarded four early-morning flights bound for California, chosen because the planes were loaded with fuel for the long transcontinental journey. Soon after takeoff, the terrorists commandeered the four planes and took the controls, transforming ordinary passenger jets into guided missiles.Some of the terrorists had lived in the United States for more than a year and had taken flying lessons at American commercial flight schools. Others had slipped into the country in the months before September 11 and acted as the “muscle” in the operation.Saudi fugitive Osama bin Laden, they were allegedly acting in retaliation for America’s support of Israel, its involvement in the Persian Gulf War and its continued military presence in the Middle East.Planes would not allow liquids onto them. After this Homeland Security was created. Almost 3k people died-including the terrorists.