As U.S. Air Force veteran Therese Frentz shows CBSNews.com, in addition to a lot of guts and training, she and her Walking with the Wounded teammates will have to drag an awful lot of gear behind them... more 
As U.S. Air Force veteran Therese Frentz shows CBSNews.com, in addition to a lot of guts and training, she and her Walking with the Wounded teammates will have to drag an awful lot of gear behind them on their Antarctic trek for charity. less 
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Fri, Nov 15, 2013 1:10 PM EST