“American Ninja Warrior” welcomes special guests at the Los Angeles qualifier when dinosaurs from “Jurassic World: Fallen Kingdom” invade the course, along with a special appearance by the film’s stars, Chris Pratt and Bryce Dallas Howard.“American Ninja Warrior” welcomes special guests at the Los Angeles qualifier when dinosaurs from “Jurassic World: Fallen Kingdom” invade the course, along with a special appearance by the film’s stars, Chris Pratt and Bryce Dallas Howard.