A quarter century after passenger and baggage screening became mandatory at airports, airport security has shifted its focus ...
Add Yahoo as a preferred source to see more of our stories on Google. Scanners were introduced at airports to combat hijacking in the 1970s - Getty Images The conveyor-belt security scanners at ...
Add Yahoo as a preferred source to see more of our stories on Google. At some of the world’s most sensitive spots, authorities have installed security screening devices made by a single Chinese ...
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