How is it to land with that engine on your back? I knew guys in the Airborne who used just regular parachutes and it seemed like they were breaking this bone or that one every so often when they landed. They had some joke about trees, I don't remember it exactly but it involved putting your helmet in-between your legs if your were forced into trees. It seems like the weight and power of the engine would make a smooth landing a real timing event to come in smoothly.