County commissioners may provide for civil defense activities as provided by law within their respective counties. The county commissioners shall include the cost of these activities in the annual estimate under chapter 3. [1987, c. 737, Pt. A, §2 (NEW); 1987, c. 737, Pt. C, §106 (NEW); 1989, c. 6, (AMD); 1989, c. 9, §2 (AMD); 1989, c. 104, Pt. C, §§8, 10 (AMD).]