If I were the police. I will also shoot another few round make sure he dead rather than me or the victim. I will shot at least total 3 bullet. 1st shot like the lady cop. 2nd and 3 rd on the head. If he move again I will shoot until my revolver empty.
This type of criminal desert to die. If put in prison waste tax payer money .
In this type of life and death situation, there is very little time to think and respond, much less to think about giving the suspect his day in court. The adrenaline gets pumped up and you just want to end the conflict and FAST. Even for trained personnel, its never easy and there is always the fear when you are in that situation. No matter how much shooting experience one has, its mainly at targets and very different when you have a real live human being being the "target".
No amount of shooting at targets can make you prepared and how often does one shoot a human being? Unless you are a Jap soldier trained during WWII, otherwise shooting or killing real people during training is not possible. Unlike targets, people do get up and they do shoot back. Although i frown on summary killings myself, in this particular scenario, there can be no quarter given.
I once did a bit of double tap myself and one customized scenario that was given to me when i was at a range in US was that there was a hostage infront of a target.
I had to get him in "the zone" with 2 rounds and at least one round has to be in the core torso. I had to do this within a certain time limit from drawing, acquiring/aiming to firing. I failed most of the time, always missing with the 2nd round and sometimes even wounding the "hostage" with at least one of the rounds, it was that hard even at just 15 yards(about 13 metres i think).
I did better with a 9mm gun than a .38 special. Never tried with a .22 although it will definitely give a much better grouping. With a .45 it was impossible for me though i am pretty sure one round in or near the core will be a serious showstopper unless he was wearing body armour. Even with a .45, my instructor always taught me to go for the 2nd round as you rather give than take - "give the lead rather then take the lead"