Story on sports ski helmets and bobsledding technology.  WS of speed skier traveling down the slopes. Skier crashes in a brutal way. More speed skiing b-roll. Explanation of new type of skiing helmet which is faster and twice as strong. From Bell helmets. 3-D generated bobsledding track on desktop computer from UC Davis. Explanation that the team is preparing for the event using the simulation. B-roll of a team using the bob sled which is like a video game.