Visible crew/equipment: In the scene showing Officer Malloy shortly after he enters the inside of the supermarket, a crew member is visible in a back room/hallway of the supermarket.
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Other mistake: Reed is running license plate numbers over the police scanner, looking for a hit-and-run culprit. The plate number he is looking for comes back on the radio as owned by a woman and is on a tan 1974 Ford sedan, but when the officers go to the woman's house and see the damaged car with that license plate, it's not a tan Ford, but a tan 1974 Chevrolet Caprice.
Answer: Adding to the previous answer, this is S3xE10 "Public Affairs DR-14" of Dragnet. At timecode 00:18:40, Friday talks about the clothing hangers on the storeroom suit rack in Daltons.
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