The membership of the Sebastopol Fire Department shall consist of men of good moral character and bona fide residents of, or regularly employed within, the City of Sebastopol, in good physical condition and not less than 21 years or not more than 55 years of age when admitted to membership. Upon written recommendations of the Board of Directors of the Fire Department, the City Council may, by majority vote, waive any of the foregoing requirements of membership. The Board of Directors of the Fire Department may, by majority vote, appoint members to the Fire Department and shall have the right to terminate the appointment of any member of the Fire Department, except for the Fire Chief, First Assistant Chief, and Second Assistant Chief.