50 U.S.C. § 3609: Enhancement of security authorities

at the National Security Agency Headquarters complex and at any facilities and protected property which are solely under the administration and control of, or are used exclusively by, the National Security Agency; and in the streets, sidewalks, and the open areas within the zone beginning at the outside boundary of such facilities or protected property and extending outward 500 feet. The performance of functions and exercise of powers under subparagraph (B) 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) of paragraph (1). Agency personnel authorized by the Director under paragraph (1) may transport an individual apprehended under the authority of this section from the premises at which the individual was apprehended, as described in subparagraph (A) or (B) of paragraph (1), for the purpose of transferring such individual to the custody of law enforcement officials. Such transportation may be provided only to make a transfer of custody at a location within 30 miles of the premises described in subparagraphs (A) and (B) of paragraph (1). The Director of the National Security Agency is authorized to establish penalties for violations of the rules or regulations prescribed by the Director under subsection (a). Such penalties shall not exceed those specified in section 1315(c)(2) of title 40 . Agency personnel designated by the Director of the National Security Agency under subsection (a) shall be clearly identifiable as United States Government security personnel while engaged in the performance of the functions to which subsection (a) 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; 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; or transport an individual pursuant to subsection (a)(2). 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 .