Among other things, apparently.
In addition to setting the standard on hunting ethics, it turns out Montana author Jim Posewitz had a hand in protecting the St. Regis River where it flows alongside I-90. This nice piece from Missoulian reporter Rob Chaney explains how Posewitz worked to keep the highway out of the river bottom as much as possible. The asphalt winds so the river could remain free, or at least freer than it might have been.