Corrected entry: While trying to get a response from Washington about the code name, David 14, the aircraft, which moments later is revealed as Air Force One, finally communicates with them. The female voice says they are going to crash while spurting threats. As she is doing this, you can hear the engines of the plane getting louder and louder over the radio. It is obviously the sound of a propeller plane. Moments later, a shot reveals Air Force One as a jet engine airliner, not capable of making the sound heard over the radio. (00:10:25)
Quantom X
18th Apr 2013
Correction: The sound is radio static, not propellers.
DavidRTurner