Nine celebrities pair off with elite ninjas who help them prepare mentally and physically for the obstacle course.

The heart-racing obstacle course competition series "American Ninja Warrior" premieres its ninth season this summer. The action-packed series follows competitors as they tackle the world's most difficult obstacle courses in qualifying and finals rounds across the country. Those that successfully complete the courses in each city will move onto the national finals round in Las Vegas and compete for a $1,000,000 prize. In the first Qualifying Round from Los Angeles competitors must tackle six obstacles, including Cannonball Drop and Battering Ram, which are new this season. "American Ninja Warrior" veterans Kevin Bull and Grant McCartney return for another shot at completing the course.