The damaged equipment cut power to around 14,000 customers, police said, weeks after an attack in North Carolina left thousands in the dark for days amid federal warnings of extremist threats to electricity infrastructure. The Christmas Day vandalism near Tacoma marked more such incidents in the state, where two November attacks on Puget Sound Energy substations were investigated by the FBI. Vandalism and deliberate damage were reported last month at substations in southern Washington and Oregon. Dispatchers received a call about a fire at another substation at 7:21 p.m. local time Sunday, the sheriff’s department said. Power grid threats have risenAnti-government groups over the past two years have used online forums to urge followers to attack critical infrastructure, including the power grid.