Conspiracy theorists who doubt the facts about the September 11, 2001 terrorist attacks didn’t stop with the World Trade Center. Here, we answer their claims about the attack on the Pentagon.

Watch live as the 9/11 terrorist attacks are remembered 24 years later. Events are scheduled to be held in New York City and at the Pentagon.

Thursday marks 24 years since Sept. 11, 2001, when 2,977 people were killed in terrorist attacks on New York's World Trade Center,

On September 11, 2001, al-Qaeda hijackers crashed four planes into U.S. targets, killing 2,977 people. American Airlines Flight 11 hit the North Tower first, followed by Flight 175 striking the South Tower.

On Thursday, America marked the 24th anniversary of the deadly attacks with solemn ceremonies in New York, at the Pentagon and in Shanksville, Pa.

WASHINGTON, D.C. - On the 24th anniversary of the September 11, 2001 attacks, President Donald Trump and the First Lady made a visit to the Pentagon memorial where 184 people were killed in that attack.

At the heart of the chapel are its stained-glass windows, crafted from countless fragments joined together to transform broken pieces into something whole.

The parliaments of Lithuania, Latvia, and Estonia are preparing a joint letter asking key committee heads in the U.S. Congress to save a major security assistance program in the face of ongoing Russian threats,