(a) Whenever, in the interests of national defense, the President
defines certain vital military and naval installations or equipment as requiring
protection against the general dissemination of information relative thereto, it
shall be unlawful to make any photograph, sketch, picture, drawing, map, or
graphical representation of such vital military and naval installations or
equipment without first obtaining permission of the commanding officer of the
military or naval post, camp, or station, or naval vessels, military and naval
aircraft, and any separate military or naval command concerned, or higher
authority, and promptly submitting the product obtained to such commanding
officer or higher authority for censorship or such other action as he may deem
necessary.
(b) Whoever violates this section shall be fined under this title or
imprisoned not more than one year, or both.