; or (3) prevents the Secretary of Homeland Security from conducting any low-level overflights over the wilderness areas that may be necessary for law enforcement and border security purposes. (b) Withdrawal and administration of certain area (1) Withdrawal The area identified as Parcel A on the map entitled Potrillo Mountains Complex and dated April 18, 2016, is withdrawn in accordance with section 3(k)(1). (2) Administration Except as provided in paragraphs (3) and (4), the Secretary shall administer the area described in paragraph (1) in a manner that, to the maximum extent practicable, protects the wilderness character of the area. (3) Use of motor vehicles The use of motor vehicles, motorized equipment, and mechanical transport shall be prohibited in the area described in paragraph (1) except as necessary for— (A) the administration of the area (including the conduct of law enforcement and border security activities in the area); or (B) grazing uses by authorized permittees. (4) Effect of subsection Nothing in this subsection precludes the Secretary from allowing within the area described in paragraph (1) the installation and maintenance of communication or surveillance infrastructure necessary for law enforcement or border security activities. (c) Restricted route The route excluded from the Potrillo Mountains Wilderness identified as Restricted—Administrative Access on the map entitled Potrillo Mountains Complex and dated April 18, 2016, shall be— (1) closed to public access