What happens, for example, in West Virginia, a big adventure tourism state, is that they have an assumption of risk statute in their state, where if people do these activities, the operator is not responsible unless there's gross negligence on their part.
In the United States, there's no umbrella organization as there is in Canada, because we have a much smaller industry. In the United States, some of the rafting companies operate on U.S. Forest Service land and require U.S. Forest Service directives. Some of them, such as the operators in the Grand Canyon, are in the national park system, so they follow national park guidelines. A lot of the states have their own guidelines, and some states don't have any.