VIDEO: Nearly 80 firefighters were busy fighting a second-alarm fire overnight at a Phoenix RV dealership. According to Cpt. Jake Van Hook with the Phoenix Fire Department, somewhere between 60 to 80 firefighters responded to the blaze at La Mesa RV near 75th Avenue and McDowell Road. "Just after about 12:30 a.m. this morning, crews were called out initially for smoke in the area," Van Hook said. "Our crews found an active fire in the interior of this building." The fire was concentrated in a separate building at the dealership complex. Van Hook said he believes it was being used as a showroom and service center for RVs.