Grand Teton National Park staff this weekend handled two search and rescue missions, and several medical calls, including one fatality. Sunday afternoon at 2:15 pm, 74 year-old Harold Jennett from Troy, Michigan suffered a heart attack while on a ranger-led hike of Swan Lake near Colter Bay. The park ranger naturalist leading the hike immediately realized what was happening and initiated CPR while also alerting emergency responders of the situation. Six park rangers and one Jackson Hole Fire/EMS employee responded to the scene. After nearly one hour of CPR, Jennett could not be revived and was pronounced dead and his body was turned over to the Teton County Coroner. Rangers were also involved in a brief search for a 38 year-old visitor from Israel who failed to return when expected from a solo day hike in Cascade Canyon. He turned up at first light Sunday on his own, unharmed. Rangers also searched with the aid of Teton County Search and Rescue for two overdue hikers in the Pilgrim Creek area. Teton County searchers located them in good condition Sunday morning on the Bridger Teton National Forest.