A person is justified in threatening or using force against another to protect real or personal property of a third person, if, under the circumstances as the person reasonably believes them to be, the person would be justified under § 39-11-614 in threatening or using force to protect the person's own real or personal property.
Protection of third person's property
Tenn. Code Ann. § 39-11-615, under Justification Excluding Criminal Responsibility.
Tenn. Code Ann. § 39-11-615