Mark Kochenderfer, of Elgin, spotted the Elgin Bridge Fire just after it had started on the east side of Upper Elgin Rd. He called it in to the Sonoita Elgin Fire Department (SEFD) at approximately 11a.m., May 23.Photo by Mark KochenderferLess than two hours after the fire started, it had rapidly spread eastward toward the Mustang Mountains, threatening homes along Mustang Ranch Rd. Photo by Marion VendituoliBy 2p.m., the fire had reached the Mustang Mountains. 130 firefighters were on the scene, with crews from SEFD and multiple other agencies. Aerial support dumped fire retardant and water to help contain the blaze.Photo by Marion Vendituoli