A new program backed by Amazon has popped up at the Berwick Area YMCA that allows kids to unmask their inner ninja ...
Add Yahoo as a preferred source to see more of our stories on Google. Last year, season 15 of "American Ninja Warrior" premiered with over 3 million viewers for the weekly reality television series.
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Ninja kids!
In this week's throwback video, we check out these future ninjas!
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