U.S. v. Montiero: A clear and thorough discussion of the law of suppression and motor vehicle stops in the First Circuit

The First Circuit today issued an opinion in United States v. Montiero, (05-2283), which gives a well-written exposition of the law of suppression in the circuit.  

Of note: Testimony at the suppression hearing by Boston Police Officers that they stopped the motor vehicle for "field interrogation and observation."  The Court dropped this footnote:

We quote this phrase, which appears to be a term of art inthe Boston Police Department, from Officer Coyne's testimony at the suppression hearing. Coyne explained that he meant that he had stopped Rodrigues's car to "get information" by "speaking to [thedriver]."

I don't remember the "field interrogation and obvservation" exception to Terry v. Ohio.