During his college days, Hunter Durham spent his summers working at Yellowstone National Park. "We had signs everywhere telling people not to feed the bears. It just didn't seem to help. People would want to have picnics with them. The problem would come when the picnickers would be full and out of food and the bear would still be hungry. I'll never forget the scene I came upon once when a family had been feeding a bear and he wanted more food. They were able to get back in their car-a tiny Volkswagen bug with a canvas sunroof. When I got there, the family was in the car and the bear was clawing at the top. I found a rather large pole and beat him off."