A hill walker spotted a bright orange square and flashing lights across the valley, and reported it in case it was someone requiring assistance. A team member was dispatched to check from the roadside using binoculars, and quickly identified the object on the hillside. With no person visible inside or next to the shelter, it was concluded that it was likely a sun shelter for a plane spotter as it was a sunny day on the Mach Loop. The callout was closed as a false alarm with good intentions.
