. . "21"^^ . "Nitro Circus is an \"action sport collective\" led by Travis Pastrana, featuring his friends and him traveling around the world riding dirtbikes, base jumping, and performing stunts. It has spawned a tour, a second television series based on the tour, and a 3D feature film."@en . . . . . . . . "Nitro Circus"@en . . . "2"^^ . . .