
As the U.S. nears its fourth year of troop deployment in Iraq, soldiers are finding the fight against fatigue to be a constant battle. The primary concern associated with fatigue during military operations is its effect on mental performance.
"You tend to process information more slowly," says Staff Sgt. Sean Byard. Byard has deployed to Afghanistan twice and now works at the Walter Reed Army Institute of Research. "People do make errors when they're sleepy, but primarily what they do is slow down. In time-critical tasks, like target acquisition, every second counts, every millisecond can count."
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