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The Transportation Security Administration is deploying more bomb-sniffing K-9s at airports and is on schedule to upgrade carry-on baggage screening to high-tech 3-D imaging machines. (Associated Press/File)
Photo by: Michael Dwyer
The Transportation Security Administration is deploying more bomb-sniffing K-9s at airports and is on schedule to upgrade carry-on baggage screening to high-tech 3-D imaging machines. (Associated Press/File)

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