The Transportation Security Administration soon will begin randomly swabbing passengers' hands at checkpoints and airport gates to test them for traces of explosives.
Previously, screeners swabbed some carry-on luggage and other objects as they searched for the needle in the security haystack -- components of terrorist bombs in an endless stream of luggage.
But after the Christmas Day attempted bombing of Northwest Flight 253 over Detroit, Michigan, the TSA began a program of swabbing passengers' hands, which could be contaminated by explosive materials, experts say. The TSA will greatly expand the swabbing in the coming weeks, the agency said.'
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