Members of the council, council employees, or persons currently certified as firearms instructors by the council pursuant to Pol 404.05, having certified a person as being proficient with their weapons and meeting the standards established in Pol 404.03 to qualify under the provisions of 18 U.S.C. § 926C(d)(2)(B), shall be immune from liability for any action taken by such person subsequent to their certification, unless the employee or firearms instructor knew that the person certified was not qualified under 18 U.S.C. § 926C(d)(2)(B) to have received such certification.