Simple: NOT going jogging on a trail clearly posted with signs that warn of wolves.

All those women, and not one brain between them to stop and think, "Hmmm, I'm living in Alaska. I know by the signs that wolves have attacked humans and dogs on this trail fairly recently. I'm armed only with pepperspray. Hmmm, maybe we should just go to Curves, instead."

Once again, a little situational awareness would've prevented this whole thing.