René Compeán had hiked in Angeles National Forest many times. So he didn’t think twice when he set out on one of his favorite trails for a quick hike. But to save time, he went off trail — and ended up lost and relying on a rapidly dying cell phone to call for help. René was unprepared to spend a cold night in the mountains with wildlife roaming around him, and his mental and physical health deteriorated quickly.

Rescue teams struggled to find him in a thick fog and a massive search area, until a stranger with a unique set of technical skills stepped in with key information.

We also speak to Jessie Krebs, wilderness survival instructor of OWLS Skills, about what you should and shouldn’t do if you’re lost in the wilderness, and how to prepare, no matter the length of hike.

For more about the series, check out https://www.onstar.com/podcast.