Join hostess Gabrielle Reece as she hang glides off a volcano in Hawaii with instructor Armin Engert.

At Drydon Air Force Base, NASA pilots Bill Dana and Ed Schneider have been testing high concept aircraft for decades. Dana talks about the history of the high powered research while Scneider discusses the slow and precise F-18s.

For pro jet ski pilot Chris MacClugage, his skill leads to tournament wins on the water. MacClugage and Bruce St. Jernstrom trace the evolution of jet ski racing, and MacClugage relives some of his most unique experiences.

This video includes footage of extreme sports and interviews with the experts who live with their passions day in, day out.

Follow The Extremists as they travel the world, searching for the rush of adrenaline that comes from mastering the natural world. From white water rafting to mountain climbing and hang gliding, each new adventure brings a better understanding of human limitations, or the lack thereof.