another scenario would be if that person was in a wreck and the car was on fire and their hand was trapped with no hope of being freed and you made a decision to amputate the hand to save their life, or any other emergency where you had to cut or use deadly force to save their life.baldeagle wrote:(b) "A person is justified in using both force and deadly force against another when and to the degree he reasonably believes the force or deadly force is immediately necessary to preserve the other's life in an emergency."
So the purpose of the use of deadly force must be to preserve the life of the suicidal person and may only be used when it is "immediately necessary....in an emergency."
Some possible scenarios are; the person has a gun pointed to their head and you shoot their hand to knock the gun away, or the person is about to jump into traffic or in front of a train and you shoot them in the leg to disable them. But shooting a suicidal person center mass probably won't be looked upon favorably in a court of law.
this is an extreme scenerio just to give another reference of the use of deadly force to save a life.