In the event that a county fire marshal shall become incapacitated or otherwise disabled, the board of chosen freeholders of the county may appoint an acting fire marshal to hold such office during the period of such incapacity or disability. The acting fire marshal shall exercise all the powers of the fire marshal and shall serve without any additional compensation for his service. The said board of chosen freeholders may pay the county fire marshal his usual salary during his incapacity or disability.
N.J.S. § 40A:14-3