Department Store, Retail San Diego, CA – Sprinklers activate to help firefighters stop blaze at Home Depot November 16, 2016 viking210 A fire that started in a big rig full of Christmas decorations spread into a Home Depot Wednesday night, forcing employees and shoppers to evacuate. Employees at the Home Depot at 355 Marketplace Ave. in the Mountainview neighborhood called 911 at about 10:20 p.m. to report the fire. When firefighters arrived, the trailer was in flames in a loading dock and the fire had spread both inside and outside the warehouse, San Diego Fire Department Deputy Chief Steve Ricci said. Several propane tanks that were stored outside the warehouse exploded. The first fire units called for additional help. They knocked down most of the flames in about 10 minutes. The fire caused the warehouse sprinkler system to go off and firefighters sprayed down the flames inside the warehouse, so there was both fire and water damage, Ricci said. The Metro Arson Strike Team was trying to determine what started the trailer fire, Ricci said.