No person entering or while at Mt. Weather or the NETC will carry or possess firearms, other dangerous or deadly weapons, explosives or items intended to be used or that could reasonably be used to fabricate an explosive or incendiary device, either openly or concealed, except:

(a) For official purposes if the Administrator, Mt. Weather Executive Director, or the Assistant Administrator for the United States Fire Administration or designee approves; and

(b) In accordance with FEMA policy governing the possession of firearms.