Danny,
Thanks for that, I have to suspect that with a third throttle in a vertical dive, those dive brakes must have been "speed limiting" as I experienced with gliders. I'm not sure what the approach angle into Sarajevo, or doing a "Khe San" was in the Herk, I bet AA62 probably knows, but to me, as a GE down the back, it felt quite a steep descent. Of course, as you state, the whole purpose of the VV was to deliver your cargo with absolute accuracy, and minimum threat to the delivery vehicle, as was ours in to Sarajevo. Stay well.
Smudge
A typical Khe Sanh Demo I reckon at best a 20 degree dive angle;
http://youtu.be/jw2er9gaeMc