With installations of full-body scanners expected to triple by the end of the year, New York Times travel columnist Joe Sharkey says the devices will soon be an unavoidable feature of air travel. "The rationale for this is clear," he writes. "Nonmetallic explosives pose a major security threat." Still, Sharkey warns, based on reader reaction to his columns, a minority of travelers remains committed to avoiding the machines at all costs -- even if it means reducing their air travel.
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