N.J. Stat. § 40A:14-95
In any municipality, fire district, regional authority, or county in this State maintaining a fire department, or where there shall exist one or more incorporated fire companies affording fire protection to the municipality, fire district, regional authority, or county with membership serving under the jurisdiction of and with the consent of the municipality, fire district, regional authority, or county, it shall be lawful for the governing body of the municipality, board of commissioners of the fire district, regional authority, or county board of chosen freeholders to provide, by ordinance or resolution, for the establishment of an auxiliary to any fire department or company to be known as the Junior Firefighters' Auxiliary.
N.J.S. § 40A:14-95