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U.S. troops in Vietnam lugged 85 pounds or more - from their weapons and ammunition to survival gear to survive the harsh environment. But that load has only grown, and now the high-tech soldiers of Afghanistan and Iraq haul more than 100 pounds. More weight is expected to be added in the future to the already heavy burden on the back and shoulders of American warriors.
But the military is now developing a new passive "third arm" attached to soldiers that would allow them to carry more, and perhaps even have better marksmanship, according to the...