VIDEO: Injured vets take on the epic South Pole trek

12:33 PM, Jul 24, 2013   |    comments
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After an IED hit their humvee, four soldiers suffered life-changing injuries ranging from amputations to blindness. 

Together, they pledged to take the South Pole Allied Challenge and plan to trek 20 miles a day in frigid temperatures.

Norah O'Donnell reports.

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