Are you ready to climb aboard something called the Slingshot? How about the Power Surge, Extreme or the Storm? These rides debut as the Minnesota State Fair opens. Such rides are usually safe, but things have been known to go wrong. Last year, almost 10,000 people were injured on amusement park rides. Bob Johnson, executive director of Outdoor Amusement Business Association, says there are plenty protections in place to make sure the rides are safe.