Just a few years ago, BASE jumping (Buildings, Antennas, Spans, Earth) existed on the very fringes of action sports. Wingsuits were only worn by a handful of brass-balled sky divers the world over. But times have changed, and fast.

Now, wingsuits are widespread and BASE jumping has gone mainstream with worldwide events sponsored by the likes of Red Bull. The current king of BASE jumping, World Wingsuit Champion Espen Fadnes, discusses where he thinks the sport is headed as well as his surreal transition from 9-to-5'er to international extreme sports star, in the exhilarating documentary, Outlines.