Friend of mine, who guides out of BC, was trekking a goat hunter up to the high country with an intern along. They were attacked by a grizzly sow. Intern, young Dutch woman, had her pack ripped off, friend was playing dodge a claw around a large tree, and the client nailed the bear with a .300 short mag (only rifle along - which is another discussion). They camped on the spot, called it in, and spent the next two days being the principal subjects of a "murder" investigation. Eventual decision was a justified kill. Easy thing would have been to walk away. Had they been caught doing that, the result would have been very different.