I guess, the only time police are in danger and can use guns is when the criminal is actually firing at them. When criminal simply pointing a gun in their direction, it does not mean that they will fire it, so, wait until you actually hear a shot. Especially if there are two officers on the scene, it is hard to kill both of them, so, one officer will still be able to draw his gun. But if, after shooting one of the officers, the criminal turns around, there is no immediate danger anymore (even if he still has a gun in his hand), so, just let him go and track him later based on the car he was in - hoping it was his car). Anyone see a problem with this logic?