TMBA is the New York animation studio that created the "physics behind the stunts" animations for Discovery Channels "Stunt Junkies" TV show.br br br In this stunt Bob Burnquist rolls down a on a custom built 40 ft. mega ramp roll-in, and then grinds on a 40 ft. rail that extended over the Grand Canyon. Once he reaches the end of the rail, Bob then skydivesbase jumps 1,600 ft. into the canyon.