NBC presents it's second annual ":American NinjaWarrior" international competition with a three-hourspecial, "USA vs. the World." Five of the topcompetitors from "American Ninja Warrior" will gohead-to-head against competitors from Japan and from Europe ina high-stakes competition on the show's famed four-stage finalscourse. Matt Iseman and Akbar Gbaja Biamila will host and JennBrown will co-host.
