Subsections (2) and (5) strictly limit the use of deadly force. Under the circumstances specified in subsection (2), the actor may use deadly force if he believes it is necessary to protect himself against death, serious bodily harm, kidnapping, rape, or forcible sodomy. This formulation has two implications: (a) the actor must believe that deadly force is the only viable means of preventing the specified harm, and (b) the actor must believe that one of the specified harms is threatened on the present occasion. "Deadly force" is defined in §703-300. Its use is further restricted by subsection (5). Deadly force may not be used if the actor provoked his assailant's use of force against himself in the same encounter with the purpose of causing death or serious bodily injury. Of course, if he intends only moderate harm and receives a deadly response, the initial aggressor may respond with deadly force. The use of deadly force is also denied when the actor can avoid using it with complete safety by retreating, by surrendering possession of a thing to a person asserting a claim of right to it, or by complying with a demand that he refrain from taking an action which he has no legal duty to take. In any of these cases, the Code may seem to be opting for cowardice. However, it should be the strong principle of any criminal code to prevent death wherever possible.