N.J. Stat. § App.A:9-57.7
Benefits as provided in this act shall be the exclusive remedy of a civil defense volunteer, his or her spouse, dependents, or legal representative or representatives, for any injury, disease or death arising out of and in the course of civil defense volunteer service, as against the State, any political subdivision of this State, any civil defense agency or any person or other agency acting under governmental authority in furtherance of civil defense activities, with or without negligence. A member of a civil defense agency of the Federal Government or of another State, who may perform services within this State, whether pursuant to a mutual aid compact or otherwise, shall not be entitled to benefits under the provisions of this act.
N.J.S. § App.A:9-57.7