Episode 8 Police procedure not relevant.

Why did our hero cop shoot the psychiatrist? She had nowhere to run and the Pen was hardly a deadly weapon as far as an armed policeman would be concerned. Her job was done so any danger had ceased. She was white as well. NO command was given just bang bang bang. Now he will need to hand in his gun and badge and wait for psych reports. Wonder how a shrinks colleague will feel about being in the same room as a SHRINK KILLER?