More firefighters headed to Yellowstone and Grand Teton national parks, where large, growing wildfires have closed or threaten key roads and forced the evacuation of a large campground during a busy stretch of the summer tourist season. The fire was less than three miles from Madison Junction, an area that includes a campground, visitor facilities and staff housing. Hearst Castle, the palatial ocean-view estate popular among tourists, remained closed because of its proximity to the flames, but officials say they are increasingly confident it will be spared. Gov.