The qualifying rounds continue in L.A. with ninjas from across the country taking on the world's most challenging obstacle course. Competitors as young as 15 return to take on veterans and will have a chance to face a taller Mega Warped Wall.

The qualifying rounds continue in L.A. with ninjas from across the country taking on the world's most challenging obstacle course. Competitors as young as 15 return to take on veterans and will have a chance to face a taller Mega Warped Wall.