The story stated that they were serving Fed. warrants. The article didn't state what the warrants were for. USMS normally serves both civil & criminal warrants out of Fed. Crt. My experience with the Feds regarding narcotics. Is that if it was a DEA or BATF or FBI, case. They'll serve the arrest warrants. The USMS gets the fugitive warrants and what comes out of Fed. Crt.
Serving criminal warrants is very dangerous. People are at their "fight or flight" stage during this process. The act of placing a person under arrest be it for a Misd. or Fel. can go bad fast.
Your larger areas, if they have a USMS office in that location, normally have local LEO's assigned to such things as, Fugitive Task Forces, to assist the USMS. The local LEO's know the area and many of those who the USMS are looking for.
