Just came across the wire yesterday:

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Two postal employees arrested at O’Hare for stealing items from packages including narcotics
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According to the complaint affidavits, Brown and Wheeler are Postal Service employees at the International Service Center located at O’Hare Airport, Chicago, Illinois (“International Service Center”) and allegedly have been opening and stealing the contents of Express Mail and Priority Mail parcels. These rifled Express and Priority Mail parcels fit the general profile for parcels which contain narcotics, in that they are sent from narcotics source states, from fictitious senders or to fictitious recipients, and narcotics sniffing canines alert to the parcels. The defendants are alleged to have stolen contents, some which included narcotics, out of Express and Priority Mail parcels from at least 16 pieces of mail on at least seven occasions.
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http://www.postal-reporter.com/blog/...ing-narcotics/