This episode's headline: Nurturing Nature; Range Wars; Conversation - Military Base. The guests include DENNY SCOTT, United Brotherhood of Carpenters; KARIN SHELDON, The Wilderness Society; TOM COLLIER, Department of the Interior; JAMES COURTER, Chairman, Base Closing Commission; CORRESPONDENT: GREG HIRAKAWA. Byline: In New York: ROBERT MacNeil; In Washington: JAMES LEHRER