bulldozer operator, braden barney was killed a week earlier. while the fires continue to spread, crews have managed to keep a single home from burning and in some evacuated areas they are being allowed to return home. eileen was allowed to return to her house. >> reporter: did you worry? >> i did. it was very stressful. >> reporter: the fire continues to impact yosemite national park and the floor remains closed. >> a large portion of the park remains open. visitors can still come to the highway country, tioga pass, that is all open. you can still go backpacking, high sierra camps open. >> whether scientists are as fascinated as we are by the tornado-like columns that formed at the fire. from the university, they're on site to measure the updraft taking place. more on their research and how it could help forecast the intensity of fire storms. >> it was a spectacle few have seen close up, a phenomena at the carr fire because of strong winds. >> as those winds were coming along and being heated by the intensity of the fire, some kind of updraft g