As the passengers on a fourth hijacked plane, United Flight 93, learn the details of the terror that has already unfolded in New York and Washington that morning, they concoct a brave plan to take matters into their own hands.
Gordon Felt's brother, Edward, was a passenger on United flight 93, which was hijacked by al-Qaida terrorists on Sept. 11, 2001 and later crashed in Pennsylvania. He joins Morning Joe to discuss his thoughts on Osama bin Laden's death.
A flight speed indicator from United Flight 93 found at the crash site in Shanksville, Pennsylvania.
Homeland Security Director Tom Ridge speaks during a memorial service for the victims of United Flight 93 in Shanksville, Pa., Wednesday, Sept. 11, 2002.