; (ii) the Director of the Bureau of Land Management; (iii) the Commissioner of Reclamation; (iv) the Director of the United States Fish and Wildlife Service; and (v) the Director of the National Park Service; and (B) the Secretary of Agriculture, with respect to National Forest System land, acting through the Chief of the Forest Service. (7) Southern border The term southern border means the international border between the United States and Mexico. (b) Special use authorization Subject to subsection (c), the Secretary concerned shall not require a Border State to obtain a special use authorization for the temporary placement on Federal land within the Border State of a movable, temporary structure for the purpose of securing the northern border or southern border, if the Border State submits to the Secretary concerned notice of the proposed placement not later than 45 days before the date of the proposed placement. (c) Temporary placement (1) In general A movable, temporary structure described in subsection (b) may be placed by a Border State on Federal land in accordance with that subsection for a period of not more than 1 year, subject to paragraph (2). (2) Extension (A) In general The period described in paragraph (1) may be extended in 90-day increments, on approval by the Secretary concerned. (B) Consultation required The Secretary concerned shall consult with the Commissioner of U.S. Customs and Border Protection for purposes of determining whether to approve an extension under subparagraph (A). (C) Approval The Secretary concerned shall approve a request for an extension under this paragraph if the Commissioner of U.S. Customs and Border Protection determines that operational control has not been achieved as of the date of the consultation required under subparagraph (B).