Atta, investigators said, flew from Florida to Baltimore, Maryland, where he met a final time with Al-Shehhi the day before they launched their attacks. Both were aboard American Airlines Flight 11, ...

Authorities believe those aboard United Flight 93 took a vote and fought back against their hijackers after learning of three other plane crashes in New York City and at the Pentagon that morning ...

Courtesy photo In the hours after United Airlines Flight 93 plummeted ... Also on board the plane were four terrorist hijackers. Flight 93 was one of four planes to be hijacked that day.

Wednesday marked 23 years since nearly 3,000 people were killed as 19 al-Qaeda hijackers seized control of four jetliners on Sept. 11, 2001. Two planes were flown into the World Trade Center, one ...