So if an officer shoots and kills someone that had a gun pointed at them prior to that person actually pulling the trigger, they were in the wrong and shouldn't have fired their weapon? They should wait to see if the criminal INTENDS to actually shoot them before they take action? How is a vehicle coming at you any different than her standing there with a gun pointed straight at him?
And the fact that you believe officers, who see the worst of humanity on a daily basis and put their lives on the line every day, should just be willing to find out what someone's intentions are prior to taking action, is completely ludicrous.