The County Executive may commit County resources to the same extent of Executive powers in a County emergency to assist in an emergency in another governmental unit upon the condition that said other unit of government commits itself to repaying the County for the full cost of County provided manpower and equipment so that there shall be no out-of-pocket cost to the County, and upon the condition that unbudgeted funds in the contingency fund may not be utilized for this purpose. The County Executive must declare a state of emergency before committing resources under this section.