Marines Jonathon Blank and John Nelson served together in Afghanistan, and Nelson helped save his friend’s life after an explosive severed his legs. Now Nelson carries Blank on his back as they explore together — even conquering Mount Whitney, the tallest peak in the Lower 48.» Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC
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Veterans With Incredible Bond Hike Together — One Carrying The Other On His Back | NBC Nightly News