If, in addition to monetary assistance, benefits, or other temporary or permanent relief, the United States Government or any agent thereof furnishes medical, surgical or hospital treatment or any combination thereof to an injured civil defense volunteer or will reimburse such civil defense volunteer for the expense of such treatment, then the civil defense volunteer shall have no right to receive payment for or reimbursement of the expense of such medical, surgical or hospital care under the provisions of this act.
N.J.S. § App.A:9-57.21