We did know but this is a simulation of the hudson crash I saw for the first time.
This is pretty neat.
In the upper right part of the screen, the airspeed and altitude are shown.
The lower right corner shows (in writing) the dialog between Sullenberger and the CP...you can hear the transmissions between the aircraft and the tower/departure control.
http://www.youtube.com/watch_popup?v=tE_5eiYn0D0