LAW
There are some key elements for the use of deadly force by officers acting in self-defense. First, there must be proof that he or she was confronted with an unprovoked attack. Second, there must be proof that there was a threat of injury or death. Third, the proof must show that the degree of force that was used, was reasonable under the circumstances. Lastly, proof that he or she was going to be injured or killed unless he or she used self-defense.