It was a dream fulfilled, followed by a nightmare. Jonathan Rohloff and his daughter Grace had hiked thousands of miles together, and after securing a permit to hike Yosemite National Park’s Half Dome trail, made it to the top on the afternoon of July 13. Storms had been forecast, but the skies had been clear—but as they took photos at the top, thunder sounded. Rohloff tells SF Gate they knew they had to quickly make their way down, beginning with the 400-foot stretch of trail that reaches the summit and is supported by two metal cables. Rohloff says that based on their experience, he and his …