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In this report, CBS investigates security lapses at the back doors of "nearly every" U.S. airport. As part of the investigation, CBS correspondents document the "open flow of non-inspected vehicles through the back gates at Chicago's O'Hare Airport". Further south at Dallas Fort Worth Airport, CBS records their correspondent driving through the open and unguarded gates into secure areas and walking up to gasoline tanker trucks and propane gas tanks.
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