Factual error: The badge the ATF Special Agent is displaying on his suit jacket is wrong. It's the wrong shape and style of an actual ATF Badge. (00:02:57)

Blue Bloods (2010)
1 mistake in The End
Starring: Tom Selleck, Bridget Moynahan, Donnie Wahlberg, Len Cariou, Will Estes
Frank Reagan: I'm the PC. I know everything.
More trivia for Blue Bloods
Question: What is the pin Mayor Dutton is wearing?
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Answer: The Seal of the City of New York.