SOUTH SALT LAKE, Utah — Nearly 400 residents have been allowed to return to their homes after a gas leak triggered a fire in the area, forcing widespread evacuations. The incident, which unfolded on Sunday, began with a truck fire caused by a downed power line, eventually leading to the detection of the gas leak. The South Salt Lake Fire Department and Unified Fire Authority responded swiftly to the scene, where a significant safety concern was identified. According to South Salt Lake Fire Chief Terry Addison, the gas leak was initially undetected due to the odorless nature of the burning…