area. (c) Fire, insects, and diseases In accordance with section 4(d)(1) of the Wilderness Act ( 16 U.S.C. 1133(d)(1) ), the Secretary may carry out any activity in a covered area that the Secretary determines to be necessary for the control of fire, insects, and diseases, subject to such terms and conditions as the Secretary determines to be appropriate. (d) Grazing The grazing of livestock on a covered area, if established before the date of enactment of this Act, shall be permitted to continue subject to such reasonable regulations as are considered to be necessary by the Secretary, in accordance with— (1) section 4(d)(4) of the Wilderness Act ( 16 U.S.C. 1133(d)(4) )