On Thursday, July 12, 2012, the Mono County Sheriff Search and Rescue (SAR) Team responded to aid a 74 year old man from Markleeville, California, who was hiking the John Muir Trail west of Shadow Lake. He had begun experiencing chest pains.
Other backpackers used a cell phone to call 911. The Team requested the assistance of the Yosemite National Park helicopter to extract the man from the backcountry. The helicopter was able to land near him and transported him to a waiting ambulance at the Mammoth Lakes Forest Service helipad.
He was taken to Mammoth Hospital for treatment.