N.C. Gen. Stat. § 166A-19.78

When it is determined by the Governor that a great public crisis, disaster, riot, catastrophe, or any other similar public emergency exists, or the occurrence of any such condition is imminent, and, in the Governor's opinion it is necessary to evacuate any building owned or controlled by any department, agency, institution, school, college, board, division, commission, or subdivision of the State in order to maintain public order and safety or to afford adequate protection for lives or property, the Governor is hereby authorized to issue an order of evacuation directing all persons within the building to leave the building and its premises forthwith. The order shall be delivered to any law enforcement officer or officer of the National Guard, and such officer shall, by a suitable public address system, read the order to the occupants of the building and demand that the occupants forthwith evacuate said building within the time specified in the Governor's order.