Today is the 15th anniversary of the September 11 attacks (also referred to as 9/11), a series of four coordinated terrorist attacks by the Islamic terrorist group called al-Qaeda on the U. S. on the morning of September 11, 2001. The attacks killed 2,996 people and injured over 6,000 others
Four passenger airliners—all of which departed from airports in northeastern states bound for California—were hijacked by 19 al-Qaeda members. Two of the planes, American Airlines Flight No. 11 and United Airlines Flight No. 175, were crashed into the North and South towers, respectively, of the World Trade Center complex in New York City. Within an hour and forty-two minutes, both 110-story towers collapsed, with debris and the resulting fires causing partial or complete collapse of all other buildings in the World Trade Center complex, including the 47-story World Trade Center Tower, with significant damage to ten other large surrounding structures. A third plane, American Airlines No. 77, was crashed into the Pentagon, headquarters of the U. S. Department of Defense, in Arlington County, Virginia, leading to a partial collapse of the building’s western side. The fourth plane, United Airlines Flight No. 93, initially was steered toward Washington, D.C., but crashed into a field in Stoneycreek Township near Shanksville, Pennsylvania, after its passengers tried to overcome the hijackers. It was the deadliest incident for firefighters and law enforcement officers in the history of the United States, with 343 and 72 killed respectively.
The destruction of the World Trade Center and nearby infrastructure caused serious damage to the economy of lower Manhattan and had a significant effect on global markets, closing Wall Street until September 17 and the civilian airspace in the U.S. and Canada until September 13. Cleanup of the World Trade Center site was completed in May 2002, and the Pentagon was repaired within a year. On November 18, 2006, construction of One World Trade Center began at the World Trade Center site. The building was officially opened on November 3, 2014. Numerous memorials have been constructed, including the National September 11 Memorial & Museum in New York City, partially pictured above, as well as the Pentagon Memorial in Arlington County, Virginia and the Flight 93 National Memorial in a field in Stonycreek Township near Shanksville, Pennsylvania. (from me and Wikipedia)