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    CNN Heroes: What's in your backpack?

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CNN Heroes: What's in your backpack?

A U.S. Air Force combat veteran participates in a trek to 'walk off the war,' as part of CNN Hero Sean Gobin's program, Warrior Hike.

CNN Heroes: What's in your backpack?

A U.S. Air Force combat veteran participates in a trek to 'walk off the war,' as part of CNN Hero Sean Gobin's program, Warrior Hike.