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Behind Closed Doors
12:00 am - 01:00 am Friday, July 31
U.S. Postal Service
Season 1 · Episode 31
Joan Lunden goes behind the scenes of the U.S. Postal Service. Included: a tour of the crime lab to see how forensic scientists investigate mail bombs and drug trafficking; and a look inside the stamp vault. Also: designs that were considered for the Marilyn Monroe and Elvis Presley stamps.
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