The State Volunteer Fire Department shall not have authority to render assistance in any emergency occurring within a county which has not accepted the terms and conditions of this Article by resolution of the board of county commissioners: Provided, that nothing in this Article shall be construed to prevent any municipality from voluntarily permitting its fire department to render assistance in any emergency, notwithstanding that it may arise in a county which has failed to accept this Article.
N.C. Gen. Stat. § 58-80-30