Helicopter was circling since at least 10:19.
The scanner is active, I may have heard something about a firearm.
10:24: Just heard police sirens
10:27: Helicopter is spotlighting towards DS.
10:30: Scanner: something something firearm something 55 Walker
10:34: "You want to go up to Mason St and check out that vehicle?" (shit, that's just down the road)
10:38: Sirens up briefly, helicoptor scanning from Broadway/Mason intersection to north/NE -- chase?
10:48: scanner: K9 units to Burnham to get a scent off a discarded jacket
10:53: Helicopter was definitely spotlighting the crest of Mason -- police sedan there as well
10:57: Heli scanning Broadway, circle CW north back to overhead, scanning Mason -> Powderhouse area
11:01: Spotlighting houses between Electric (?) and Ossipee
11:19: Helicopter not audible from my part of Ossipee