Tennessee Code Title 62. Professions, Businesses and Trades § 62-35-117

(1) Be at least twenty-one (21) years of age if applying for an armed registration card or at least eighteen (18) years of age if applying for unarmed registration;

(2) Be a citizen of the United States or resident alien;

(3) Not have been declared by any court of competent jurisdiction incompetent by reason of mental defect or disease unless a court of competent jurisdiction has since declared the applicant competent;

(4) If convicted in any jurisdiction of any of the crimes listed in this subdivision (4), have completed serving sentence or court ordered probation at least five (5) years prior to application. Conviction of the following crimes shall disqualify an applicant, subject to the conditions stated in this section:

(5) Not be suffering from habitual drunkenness or narcotics addiction or dependence;

(6) Not have any disability that, in the opinion of the commissioner, prevents the applicant from performing the duties of a security guard/officer; and

(7) Be of good moral character.