I lived in the greater Yellowstone ecosystem in the 1970s and early 80s and spent all my free time in the backcountry. Neither I nor anyone I knew ever saw a grizzly. No one was concerned about grizzlies then, except for the concern about their being extirpated from the Park and surrounding areas when the Park went through a period of bear mismanagement. This was when the Craighead brothers were studying bears in the Park and warned that the populations were dangerously low. Since then policies have changed, bear populations have recovered, bears are seen all the time, even in populated areas, and all of my old friends who still live there carry bear spray every time they set foot in the back country. Times have changed. I'm glad the bears are back, but I feel terribly sorry for those who are injured or killed and their friends/families in bear encounters.