; and (B) accomplish the purposes described in subparagraph (A) with the minimum impact necessary to reasonably accomplish the task. (c) Existing activities Consistent with section 4(d)(1) of the Wilderness Act ( 16 U.S.C. 1133(d)(1) ) and in accordance with appropriate policies such as those set forth in Appendix B of House Report 101–405, the State may continue to use aircraft (including helicopters) to survey, capture, transplant, monitor, and provide water for wildlife populations, including bighorn sheep, and feral stock, horses, and burros. (d) Wildlife water development projects Subject to subsection (f), the Secretary shall authorize structures and facilities, including existing structures and facilities, for wildlife water development projects, including guzzlers, in the wilderness areas if— (1) the structures and facilities will, as determined by the Secretary, enhance wilderness values by promoting healthy, viable and more naturally distributed wildlife populations