Except where security regulations, rules, orders, or directives apply or a Federal court order or rule prohibits it, persons entering in or on Federal property may take photographs of -
(a) Space occupied by a tenant agency for non-commercial purposes only with the permission of the occupying agency concerned;
(b) Space occupied by a tenant agency for commercial purposes only with written permission of an authorized official of the occupying agency concerned; and
(c) Building entrances, lobbies, foyers, corridors, or auditoriums for news purposes.