The sight of Bell helicopters ferrying US troops into and out of the southern Asian jungles is an enduring image of the Vietnam conflict.
Pilots and military historians are among those analysing the aircraft's role in history.
(Repeat) (Stereo)
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The sight of Bell helicopters ferrying US troops into and out of the southern Asian jungles is an enduring image of the Vietnam conflict.
Pilots and military historians are among those analysing the aircraft's role in history.
(Repeat) (Stereo)