The September 11 attacks, often referred to as 9/11

The September 11 attacks, often referred to as 9/11, were a series of four coordinated terrorist attacks by the militant Islamic terrorist group al-Qaeda against the United States of America on the morning of Tuesday, September 11, 2001.
The attacks resulted in 2,977 fatalities, over 25,000 injuries, and substantial long-term health consequences, in addition to at least $10 billion in infrastructure and property damage. It remains the deadliest terrorist attack in human history and the single deadliest incident for firefighters and law enforcement officers in the history of the United States, with 340 and 72 killed, respectively. Numerous memorials have been constructed, including 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.
I offer my condolences to the families of the victims. I'm really sorry what happened

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