; (B) an interim, nonpersistent measure is needed to aid in the reestablishment of native plant species; (C) native plant materials are not reasonably available; or (D) the plant community subject to the land management activity has been permanently altered. 202. Policy for use of locally adapted native plant materials by Department of Defense (a) Policy Chapter 159 of title 10, United States Code, is amended by inserting after section 2692 the following: 2693. Policy for use of locally adapted native plant materials in management of Department of Defense lands (a) Policy In undertaking a land management activity on land under the jurisdiction of the Department of Defense, including land withdrawn for or held by permit or lease, it is the policy of the United States that preference to the extent practicable shall be made for the use of locally adapted native plant materials. (b) Implementation The Secretary of Defense, acting through the Under Secretary for Installations, shall— (1) implement the policy established by subsection (a) through appropriate administrative actions; and (2) specifically identify situations in which the use of nonnative plant materials may be warranted, including situations in which— (A) emergency conditions require the protection of basic resource values; (B) an interim, nonpersistent measure is needed to aid in the reestablishment of native plant species; (C) native plant materials are not reasonably available; or (D) the plant community subject to the land management activity has been permanently altered. (c) Consultation The Secretary of Defense shall consult with the Secretary of the Interior and the Secretary of Agriculture regarding implementation of this section. (d) Definitions In this section: (1) Land management activity The term land management activity includes— (A) maintenance and restoration