YMMV / Brooklyn Nine Nine S 2 E 08 USPIS

• Aluminum Christmas Trees: Believe it or not, the United States Postal Inspection Service really does exist to investigate all mail-related crime. There are both uniformed officers and plain-clothed inspectors who are armed and have full powers of arrest. They even have their own forensics lab and SWAT team. To top it off, they have the highest conviction rate of any federal law enforcement branch.