¶1The motion judge now has provided the missing piece of the puzzle. The judge specifically found that “Detective Cutillo first observed the *937Lincoln while standing on the comer of Garfield Avenue.” In our earlier analysis of circumstances presented here (see Commonwealth v. Jones, 375 Mass. 349, 354 [1978]), we reasoned that “[c]ertainly, sighting the Lincoln coming from the direction which the four men and Zalenda had taken on foot, viewed in the context of a simultaneous shout — ‘They got guns’ — and a subsequent check of the area to make sure the four men were not still on foot, could reasonably be said to warrant Detective Cutillo’s ‘guess[
¶2Order allowing motion to suppress reversed.
¶3 “The choice of the word — guess — is not dispositive. The task for the court is to determine the underlying basis of the officer’s decision. A mere ‘hunch’ is constitutionally invalid, but reasonable ‘inferences’ and rational deductions therefrom may yield a ‘particularized suspicion’ in the total circumstances” (citations omitted). Commonwealth v. Spagnolo, 17 Mass. App. Ct. at 522 n.7.