 Arizona News Radio, I'm John Gilliland. A Lone Star fire burning near Karchner Cavern State Park, now at 175 acres, still 0% contained. The Coronado National Forest says crews are reinforcing containment lines and addressing hotspots with three air tankers and two helicopters. No evacuation orders yet, but visitors are asked to use caution. Work continues in a wash along a popular biking trail in Pima County.