N.J. Stat. § App.A:9-48
The Governor shall be in command in the event of any actual or imminent or threatened disaster or catastrophe in anywise connected with any emergency, and the Governor is authorized to designate the person to take command anywhere within this State of all emergency management activities in the event of such actual or imminent or threatened disaster or catastrophe, and is further authorized to delegate to such emergency commander any and all powers which in the judgment of the Governor it is deemed necessary to delegate. The judgment of the Governor in such matters shall be conclusive. Nothing contained in this section shall be construed to apply to any case where the federal government has assumed jurisdiction pursuant to the war powers of said government.
N.J.S. § App.A:9-48