Tennessee Code Title 62. Professions, Businesses and Trades § 62-35-125

(b)(1) An enhanced armed guard may carry a rifle or shotgun only if certified to carry such firearm.  An enhanced armed guard may carry only the type of rifle or shotgun that the commissioner prescribes by rule when in the performance of the guard's duties.

(2) An enhanced armed guard may only deploy a rifle or shotgun, whether in an offensive or defensive posture, when a legitimate threat necessitating such deployment is perceived to exist or be imminent.  During such time as a threat necessitating deployment of a rifle or shotgun is not perceived to exist or be imminent, the rifle or shotgun must be securely stored in such manner as the commissioner may prescribe by rule.

(3) As used in this subsection (b), “rifle” and “shotgun” have the same meanings as those terms are defined in § 39-17-1301.