I don't see any bears around here. Bear patrol must be working like a charm.

Completely off topic. I went solo hiking in Azerbaijan in August of 2022, heading towards some hilltop castle thing I saw on Google Maps. Along the way I met some locals who invited me to join them. We got to the castle around midday and I was preparing to walk back to my car alone, and they all strongly advised against it. They said it was dangerous and invited me to go camping with them, which was pretty fun as they gave me my own tent, food, etc. While at the campground, one guy pulled out his phone to show me pictures of the local wildlife, including a big ol' brown bear. I was too stupid to think about what might eat me out in the woods alone, as I lacked the instinct to check for man-eating predators having grown up in an area where I didn't need to worry about such things.

Anyway, now I think about bears before solo hiking.

This is a case where bear attacks have happened, and this specific audience includes some rather delicious salmon. If salmon stop getting eaten by bears after the bear patrol is started, it's more reasonable to make that connection.