You must - MUST - have a human double checking this. Dispatching any kind of response without human review invites catastrophe.
According to TFS, the cops on the scene had a copy of the photo, so this should already be the case.
They then showed him a copy of the picture that had triggered the alert. "I was just holding a Doritos bag — it was two hands and one finger out, and they said it looked like a gun," Allen said.
Hopefully, they had already surmised this was a false alarm, but guessing they had to cover their asses and check it out and follow through as though it was a real situation, since it was flagged by the system. Not defending this, but can see why it happened. Had the video simply been originally viewed by a person, who would have realized it was a finger, it would have ended there. On the downside, people seem hesitant to dismiss/ignore obviously errant AI assessments.