[Oceander]

We find it remarkable that nowhere in the district court record did the government identify what criminal activity Officer Hasiak suspected.

I haven't read the opinion, so this might be a case of GIGO, but this sounds to me more a case of the prosecutors dropping the ball and not doing their basic casefile development to spell out in the trial court's record what, precisely, the officer's experience was, and what his experience was telling him about this guy - unless, of course, this really is a case of an unjustified frisk.

[Tublecane]

“not doing their basic casefile development to spell out in the trial court’s record what, precisely, the officer’s experience was, and what his experience was telling him about this guy”

Most likely, the officer’s experience told him the guy was a “punk,” and punks are always up to “no good.”