; (II) section 4(d)(1) of the Wilderness Act ( 16 U.S.C. 1133(d)(1) ); and (III) the report of the Committee on Interior and Insular Affairs of the House of Representatives accompanying H.R. 1437 of the 98th Congress (House Report 98–40). (ii) Inclusions Authorized activities under clause (i) shall include the use of mechanical treatments in the wilderness areas by first responders. (D) Invasive species management and related activities In accordance with section 4(d)(1) of the Wilderness Act ( 16 U.S.C. 1133(d)(1) ), the Secretary may carry out any activities in the wilderness areas that the Secretary determines to be necessary for the control and manipulation of invasive species, including— (i) the use of nonnative species in areas in which native species cannot be grown to adequately compete with nonnative species; and (ii) the manipulation of vegetation, including through chemical, biological, and mechanical means— (I) to control nonnative species; or (II) as part of restoration activities, if natural processes alone cannot recover the ecological health of an area, as determined by the Secretary. (E) Maintenance of livestock structures The Secretary may carry out any activities in the wilderness areas that the Secretary determines to be necessary for the maintenance of structures and installations used for livestock management in existence on the date of enactment of this Act, in accordance with— (i) section 4(d)(1) of the Wilderness Act ( 16 U.S.C. 1133(d)(1) )