Search and Rescue crews and an air ambulance medics were called out to help an injured hiker stranded in a remote area.  It happened Thursday  morning northeast of Prineville at Twin Pillars Trailhead, near Wildcat Campground.   Julie Packard, 38, fell and broke her leg while hiking with relatives. She was about 4 ½ miles from the trailhead at the time.  LifeFlight was activated due to the remoteness of the area, savage said. Deputies, fire personnel and SAR members were able to hike in, reaching the woman around 1:40 p.m.