Having 196 of these deliveries, and I have not even seen Discovery. I was contacted by the producer before they started filming. She wanted to have "a film crew" accompany a flight......I explained that they could could film before, at each stop, as long as they had another, larger aircraft paralleling the smaller (exciting) ones being delivered. She was amazed, surprised and I left the conversation thinking "whoever gave her the idea, she knows nothing about it." so I am not surprised to hear that she dubs turbine soundtrack over pistons!