In the video, we show a flight test of our system hanging from a helicopter - however, our actual launches will happen while hanging from a high altitude balloo

In the video, we show a flight test of our system hanging from a helicopter - however, our actual launches will happen while hanging from a high altitude balloon, not a helicopter. The helicopter test gives us a way to test the performance of our yaw control system (to point the rocket along a desired heading) without having to do a full blown balloon launch.