The board of trustees of the police pension and relief fund for the city of Bossier City shall be composed of:
(1) The mayor.
(2) The commissioner of public safety.
(3) The city comptroller.
(4) The chief of police who is an active contributing member of the system, who upon his retirement shall continue to serve on the board of trustees until December 31, 2001. On the expiration of this term, and each subsequent term, a retiree of the system shall be elected by all retirees of the system to serve for a term of six years.
(5)(a) Four employees who are active contributing members of the system, to be elected by the membership; however, when the number of employees of the department who are members of the system equals four, as each employee retires, his position on the board shall continue as follows:
(i) The first member to retire shall serve until December 31, 1996.
(ii) The second member to retire shall serve until December 31, 1997.
(iii) The third member to retire shall serve until December 31, 1998.
(iv) The fourth member to retire shall serve until December 31, 1999.
(b) In the event all members retire in the same year, the board of trustees shall determine the order of retirement. As each term expires, a retiree of the system shall be elected by all retirees of the system to serve for a term of six years.
(6) One retiree of the system to be elected by all retirees of the system, to serve until December 31, 2000. At the expiration of this term, and each subsequent term, a retiree of the system shall be elected by all retirees of the system for a term of six years.