For purposes of this chapter, "TRIAD Program" means the triad cooperative model developed by the American Association of Retired Persons, the National Sheriff's Association and the International Association of Chiefs of Police, which calls for the participation of the sheriff, at least one (1) police chief, at least one (1) member of the American Association of Retired Persons and a representative of at least one (1) senior citizens' organization within a county and may include participation by coalitions of law enforcement, victims' services and senior citizen advocate organizations. If there is not both a sheriff and a police chief in a county or if the sheriff or a police chief does not participate, a TRIAD may include in the place of the sheriff or police chief other members of the criminal justice system, such as a district attorney.