Wingsuit fliers wear a specialized jumpsuit that shapes the human body into an airfoil, a structure whose shape provides lift, propulsion, stability, and directional control over a flying object. Fabric sewn between the legs and under the arms of the wingsuit allows the flier to glide through the air much like a bird, while a separate parachute allows him to land safely. A British stuntman died wing-diving in 2013, just a year after he parachuted into what high-profile event? Discuss