50 U.S. Code § 797 - Penalty for violation of security regulations and orders
Whoever willfully violates any defense property security regulation shall be fined under title 18 or imprisoned not more than one year, or both.
The term “Department of Defense property” means covered property subject to the jurisdiction, administration, or in the custody of the Department of Defense, any Department or agency of which that Department consists, or any officer or employee of that Department or agency.
The term “NASA property” means covered property subject to the jurisdiction, administration, or in the custody of the National Aeronautics and Space Administration or any officer or employee thereof.
The term “covered property” means aircraft, airports, airport facilities, vessels, harbors, ports, piers, water-front facilities, bases, forts, posts, laboratories, stations, vehicles, equipment, explosives, or other property or places.
Any regulation or order covered by subsection (a) shall be posted in conspicuous and appropriate places.