SOUTH LAKE TAHOE, Calif. – When there’s a medical emergency deep in the backcountry of Desolation Wilderness, REACH Air Medical Services will land their helicopter at a designated spot, hike in to find their patient, hike the patient back out to the helicopter and provide immediate medical care as they fly to the nearest hospital. “You go in and you’re the only provider,” Bryan Pond, a flight nurse with REACH, said. “We’re the only medical peopl…