When Air Traffic Control realized a 9/11 flight was gone

It's September 11, 2001, and AA Flight 77 has just vanished off the radar. As news starts pouring in of an attack on the World Trade Center, concerned air traffic controllers begin to suspect the worst. (3:25)

Latest Videos

Preview thumbnail for video'When Air Traffic Control realized a 9/11 flight was gone Now Playing
When Air Traffic Control realized a 9/11 flight was gone (3:25)
Preview thumbnail for video'The wise U.S. tactic used to win the Battle of Midway
The wise U.S. tactic used to win the Battle of Midway (3:02)
Preview thumbnail for video'This SEAL dog prevented a deadly disaster
This SEAL dog prevented a deadly disaster (4:00)
Preview thumbnail for video'A rare glimpse of pre-war Army life in color
A rare glimpse of pre-war Army life in color (2:26)
Preview thumbnail for video'These hidden heroes protect your flight from lethal weather
These hidden heroes protect your flight from lethal weather (3:30)
Preview thumbnail for video'A polar bear is released back into the wild via helicopter
A polar bear is released back into the wild via helicopter (2:12)
Preview thumbnail for video'This Apollo 8 astronaut took the famous
This Apollo 8 astronaut took the famous "Earthrise" photograph (2:43)
Preview thumbnail for video'This sailor got sucked inside a jet engine.
This sailor got sucked inside a jet engine. (1:54)
Preview thumbnail for video'The most beautiful view of South Africa's Tswaing crater
The most beautiful view of South Africa's Tswaing crater (2:25)