SHEET METAL REFLECTION CAUSE OF CALIFORNIA FIRE : CORONA (AP) — A Southern California wildfire that prompted evacuations over the weekend in the Cleveland National Forest was started by the sun’s rays reflecting off sheet metal that edged a homeowner’s backyard garden, fire officials said Monday. The 2-foot-tall metal fencing surrounded a vegetable garden and was intended to keep small rodents out, said Orange County Fire Authority Capt. Steve Concialdi. The reflection off the sheet metal ignited a wooden border and nearby grass and then spread into Silverado Canyon, prompting the evacuation of 200 homes.