For those of you that think, and say, that Tennessee has a Duty To Retreat law:
39-11-611. Self-defense. —
(a) As used in this section, unless the context otherwise requires:
(1) “Business” means a commercial enterprise or establishment owned by a person as all or part of the person's livelihood or is under the owner's control or who is an employee or agent of the owner with responsibility for protecting persons and property and shall include the interior and exterior premises of the business;
(2) “Curtilage” means the area surrounding a dwelling that is necessary, convenient and habitually used for family purposes and for those activities associated with the sanctity of a person's home;
(3) “Dwelling” means a building or conveyance of any kind, including any attached porch, whether the building or conveyance is temporary or permanent, mobile or immobile, that has a roof over it, including a tent, and is designed for or capable of use by people;
(4) “Residence” means a dwelling in which a person resides, either temporarily or permanently, or is visiting as an invited guest, or any dwelling, building or other appurtenance within the curtilage of the residence; and
(5) “Vehicle” means any motorized vehicle that is self-propelled and designed for use on public highways to transport people or property.
(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.