50 U.S.C. § 3515: Security personnel at Agency installations

within the Agency Headquarters Installation and the property controlled and occupied by the Federal Highway Administration located immediately adjacent to such Installation; in the streets, sidewalks, and the open areas within the zone beginning at the outside boundary of such Installation and property and extending outward 500 yards; within any other Agency installation and protected property; within an installation owned, or contracted to be occupied for a period of one year or longer, by the Office of the Director of National Intelligence; and in the streets, sidewalks, and open areas within the zone beginning at the outside boundary of any installation or property referred to in subparagraph (C) or (D) and extending outward 500 yards. The performance of functions and exercise of powers under subparagraph (B) or (E) of paragraph (1) shall be limited to those circumstances where such personnel can identify specific and articulable facts giving such personnel reason to believe that the performance of such functions and exercise of such powers is reasonable to protect against physical damage or injury, or threats of physical damage or injury, to Agency installations, property, or employees. Nothing in this subsection shall be construed to preclude, or limit in any way, the authority of any Federal, State, or local law enforcement agency, or any other Federal police or Federal protective service. The rules and regulations enforced by such personnel shall be the rules and regulations prescribed by the Director and shall only be applicable to the areas referred to in subparagraph (A), (C), or (D) of paragraph (1). The Director is authorized to establish penalties for violations of the rules or regulations promulgated by the Director under subsection (a) of this section. Such penalties shall not exceed the maximum penalty authorized for a Class B misdemeanor under section 3559 of title 18 . Agency personnel designated by the Director under subsection (a) of this section shall be clearly identifiable as United States Government security personnel while engaged in the performance of the functions to which subsection (a) of this section refers. protect an individual in the presence of such Agency personnel from a crime of violence; provide immediate assistance to an individual who has suffered or who is threatened with bodily harm; or prevent the escape of any individual whom such Agency personnel reasonably believe to have committed a crime of violence in the presence of such Agency personnel. Paragraph (1) shall not affect the authorities of the Attorney General under section 2679 of title 28 . In this subsection, the term “crime of violence” has the meaning given that term in section 16 of title 18 .