Each fixed base operator, aerial applicator, commercial operator, and lessee of airport facilities shall effect and pay for, and keep in full force with limits of not less than one million dollars for any one occurrence. The fixed base operator, aerial applicator, commercial operator, and lessee of airport facilities shall hold the governmental signatories to the Pullman-Moscow Regional Airport Cooperation Agreement, as amended, City of Moscow, the City of Pullman, and the Port of Whitman County, Washington, Latah County, Idaho, and the Airport Board, and their respective officers, directors, and employees, harmless from all accidents, damages, or injuries resulting from any act or operation connected with the operations or business of any such fixed base operator, aerial applicator, commercial operator, and lessee of airport facilities. Provided, the Airport Board may, in its discretion, reduce the amount of liability insurance required of any concessionaire in the airport terminal building after assessing the risk of any such concessionaire. (Ord. 83-29 §24, 1983; Ord. B-120 §1(f), 1973; Ord. A-565 §11.01, 1965).