And in Tennessee:
TCA 39-11-611. Self-defense. —
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(b) (1) Notwithstanding § 39-17-1322, a person who is not engaged in unlawful activity and is in a place where the person has a right to be has no duty to retreat before threatening or using force against another person when and to the degree the person reasonably believes the force is immediately necessary to protect against the other's use or attempted use of unlawful force.
(2) Notwithstanding § 39-17-1322, a person who is not engaged in unlawful activity and is in a place where the person has a right to be has no duty to retreat before threatening or using force intended or likely to cause death or serious bodily injury, if:
(A) The person has a reasonable belief that there is an imminent danger of death or serious bodily injury;
(B) The danger creating the belief of imminent death or serious bodily injury is real, or honestly believed to be real at the time; and
(C) The belief of danger is founded upon reasonable grounds.
(c) Any person using force intended or likely to cause death or serious bodily injury within a residence, business, dwelling or vehicle is presumed to have held a reasonable belief of imminent death or serious bodily injury to self, family, a member of the household or a person visiting as an invited guest, when that force is used against another person, who unlawfully and forcibly enters or has unlawfully and forcibly entered the residence, business, dwelling or vehicle, and the person using defensive force knew or had reason to believe that an unlawful and forcible entry occurred.
TCA 39-17-1322. Defenses. —
A person shall not be charged with or convicted of a violation under this part [governing the use of weapons] if the person possessed, displayed or employed a handgun in justifiable self-defense or in justifiable defense of another during the commission of a crime in which that person or the other person defended was a victim.