Jhonatan Gonzalez was hiking the Narrows at Zion National Park with his family - kids as young as 1 - when the calm river suddenly turned waist-deep and raging, choked with logs and debris. He and his brothers planted themselves in the current and formed a human chain. Strangers on the bank grabbed on. Dozens of hikers, including toddlers, passed hand-to-hand to safety. Everyone made it out.
