Ariz. Rev. Stat. § 13-4903
B. Notwithstanding sections 13-403, 13-404, 13-405, 13-406, 13-408, 13-409, 13-410 and 13-411, an armed nuclear security guard is justified in using physical force up to and including deadly physical force against another person at a commercial nuclear generating station or structure or fenced yard of a commercial nuclear generating station if the armed nuclear security guard reasonably believes that such force is necessary to: