i'm not convinced of the efficacy of this so called "shotcaller" system tbqh. you think everytime there is a loud noise in nyc the street is swarming with cops like a tv show? but yeah let's assume it actually works- the tradeoff is maybe an extra sixty seconds for a properly functioning gun.  to weigh this all out we really need to know what the actual response time is i mean it probably took them 20 mins to get there in the first place.
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