NBC and its G4 cable sister will crown an "American Ninja Warrior" this summer _ and it's a good bet that person will be tired.
The network said Tuesday that it will air a summer competition series putting contestants through an arduous obstacle course, sort of a serious version of ABC's "Wipeout" series. Regional rounds will winnow a field of 100 contestants before a winner is chosen at a Las Vegas course.
Weekly episodes will air on NBC and G4, both networks owned by the Comcast Corp. Spokesman Dave Welch says it hasn't yet been determined how many episodes will air or when the show will premiere.
The competition began three years ago. NBC aired the finale last season and was pleased by the ratings, leading to the expansion.