The grief still resonates for the 2,996 lives lost in New York, D.C. and Pennsylvania, and the 6,000 who were injured.

Sept. 11 is the 24th anniversary of the Sept. 11, 2001 terrorist attacks. Newspapers printed special 9/11 sections. Here's a ...

On September 11, 2001, 19 militants associated with the Islamic extremist group al-Qaeda hijacked four airliners and carried out suicide attacks.