(a) Prohibition.— Except with the written permission of both the Secretary of Defense and the Director of National Intelligence, no person may knowingly use, in connection with any merchandise, retail product, impersonation, solicitation, or commercial activity in a manner reasonably calculated to convey the impression that such use is approved, endorsed, or authorized by the Secretary and the Director, any of the following (or any colorable imitation thereof):
(1) The words Defense Intelligence Agency, the initials DIA, or the seal of the Defense Intelligence Agency.
(2) The words National Reconnaissance Office, the initials NRO, or the seal of the National Reconnaissance Office.
(3) The words National Imagery and Mapping Agency, the initials NIMA, or the seal of the National Imagery and Mapping Agency.
(4) The words Defense Mapping Agency, the initials DMA, or the seal of the Defense Mapping Agency.
(5) The words National Geospatial-Intelligence Agency, the initials NGA, or the seal of the National Geospatial-Intelligence Agency.