It's the last gasp for bomb-sensing 'puffers' at airports

A $36 million anti-terrorism program designed to detect bombs on airline passengers by shooting air blasts to dislodge explosive particles is being scuttled because the machines proved unreliable at airports. Dirt and humidity in airports led to frequent breakdowns, a TSA spokesperson said. The TSA has removed 60 puffers and will pull the rest but has no deadline.

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