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Sgt. Loftus: Dealing with life during and after war

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Two years ago, Chief Foreign Correspondent Richard Engel met Sgt. Louis Loftus on a battlefield in Afghanistan. Since then, Loftus has allowed NBC News to document his life as a soldier and a citizen. Loftus is one of 100,000 returning veterans that is being treated for PTSD. NBC’s Richard Engel reports.