September 11 attacks
The September 11 attacks, commonly known as 9/11, were four coordinated Islamist suicide terrorist attacks carried out by Al-Qaeda against the United States on September 11, 2001. That morning, 19 terrorists hijacked four commercial airliners... Wikipedia
Date: September 11, 2001 at 8:14 AM EDT
Number of deaths: 2,996
Perpetrators: Al-Qaeda led by Osama bin Laden (see also: responsibility)
Location: World Trade Center, The Pentagon, and Shanksville