Discrimination against any person in recruitment, examination, appointment, training, promotion, retention, discipline, or any other aspect of personnel administration because of political or religious opinions or affiliations or because of race, national origin, or other non-merit factors is prohibited. Discrimination based on age, sex, religious, or physical requirements that constitute a bona-fide occupation qualification necessary for proper and efficient administration of this organization may be necessary, but careful thought will precede any such act.