When you're zooming full tilt mere feet away from a solid stone face, speed is your only ally. Your one hope of escape. RBAF Proximity Flying ace Mike Swanson will tell you-the dumbest thing you can do in this situation is try to fly slow. But when you're hellbent on pushing the MtXRW envelope, that ruthlessly exacting fusion of wing-suit-canopy pilot formation flying, you're going to have to make a few compromises. You're going to have to figure out how to control your speed, all the way from the brow of Mount Eiger to the floor of the Lauterbrunnen Valley.