Body found in San Diego believed to be missing hiker Diem Le Nguyen

On a sun-scorched Monday morning in San Diego, searchers found what the mountain had quietly claimed the day before — a 50-year-old woman who had set out to do something generous and good. Diem Le Nguyen had joined a hundred others on a charity hike up Black Mountain, then pressed ahead alone, and by mid-morning had sent a final message to her sister: she was tired, and she needed water. Her story is one the summer heat has told before — the narrow distance between determination and danger, between a trail's summit and its shadows.