Three children — two aged six and one aged nine — slipped away from a family campsite near Buena Vista, Colorado, on the morning of 26 September and ended up 1.5 miles from camp in rugged Rocky Mountain terrain. It took drones, foot teams and a helicopter to look for them, but the hero of the day had four legs: Archie, a two-year-old yellow Labrador trained to track human scent.

The group was camped near the Midland Bike Trail, a well-known multi-use singletrack east of Buena Vista. Family members realised around 9 A.M. that the kids were gone and spent two hours searching themselves before calling law enforcement. That delay matters: rescue teams usually hesitate to bring in a scent dog once several hours have passed, because other people moving through the scene can muddy the trail with competing smells. Archie arrived quickly anyway.

Handlers gave him a stuffed animal belonging to one of the children to lock onto the scent. He then led his handler and two deputies downhill to a sandy wash, where they spotted children's footprints — and soon after, the kids themselves, five hours after they were last seen. Deputy Kendra Hoffman of the Chaffee County Sheriff's Office, who coordinated the search, noted that even three fit deputies were worn out by the route. Her reasoning for calling in the dog was simple: drones and helicopters can't spot a small child hiding under a rock or tree.

Remarkably, this appears to have been Archie's first real search since joining the department. It probably won't be his last — Hoffman says she'll be requesting the canine team far more often now.

The story doubles as a free masterclass in backcountry safety for families. Hoffman's advice is blunt: if a child realises they're lost, they should stop moving and "hug a tree" — or a bench, lamp post or big rock — staying put and listening for searchers. If they see rescuers in bright uniforms, they should come out and say "I'm missing" rather than hide, which children often do out of shyness or fear. And always tell an adult before wandering off from camp. The National Park Service adds that kids should know the route of any outing, stick with the group, and take a buddy if they need to leave it — plus make themselves big, wave, whistle or flash a light to be seen.

For anyone camping or hiking with children in the mountains, the takeaways are cheap and portable: a whistle on every kid, a rehearsed "stay put" plan, and a reminder that hiding from searchers is the single worst move. And if you're exploring the Buena Vista area yourself, it's a reminder of how quickly open terrain can disorient even a group of three — and how much a very good nose can matter.