N.J. Stat. § App.A:9-52
Neither the State nor any political subdivision of the State under any circumstances, nor the agents, officers, employees, servants or representatives of the State or any political subdivision thereof, including all volunteers, in good faith carrying out, complying with, or attempting to comply with, any order, rule or regulation promulgated pursuant to the provisions of this act or performing any authorized service in connection therewith, shall be liable for any injury or death to persons or damage to property as the result of any such activity. No person owning, possessing or managing any real property which has been designated, pursuant to the provisions of this act or of any order, rule or regulation promulgated thereunder, as a shelter from destructive operations or attacks by enemies of the United States, shall be liable in any civil action for death or injury to any person who, because such real property has been designated a shelter as aforesaid, enters upon it solely for the purpose of seeking refuge therein during such destructive operations or attacks or during civil defense tests ordered by lawful authority, except where such death or injury is caused by the willful act of such owner, possessor or manager, or his agents or employees. The foregoing shall not affect the right of any person to receive benefits or compensation which may be specifically provided by the provisions of this or any other State or Federal Statute, nor shall it affect the right of any person to recover under the terms of any policy of insurance. The provisions of this section shall apply but shall not be limited to establishing or developing a Code Blue alert plan, or implementing, carrying out, or providing services under a Code Blue alert plan, pursuant to the provisions of P.L. 2017, c. 68(C.App.A:9-43.18 et al.).
N.J.S. § App.A:9-52