Tennessee Code Title 58. Military Affairs, Emergencies and Civil Defense § 58-1-225

When an enlisted person of the national guard is absent without leave or misses all scheduled drills without proper authority for five (5) drills, within any twelve-month period and there is reason to believe that the enlisted person does not intend to return, the enlisted person may be discharged, or if the enlisted person is an obligor, such person may be ordered to extended active duty as provided by appropriate federal regulation.