Man's puzzling disappearance in national park triggers frantic 24-hour search involving K9

A heroic K9 dog tracked a 70-year-old missing hiker two miles down a trail in Hawai'i Volcanoes National Park after his empty rental car was found nearby.

A heroic K9 dog tracked a 70-year-old missing hiker two miles down a trail in Hawai'i Volcanoes National Park after his empty rental car was found nearby.