4th Washington state electrical substation vandalizedTACOMA, Wash. (AP) — A fourth electrical substation was vandalized late on Christmas Day in Washington state, leaving homes in Kapowsin and Graham temporarily without power, according to the Pierce County Sheriff’s Office.The attacks come as federal officials are warning that the U.S. power grid needs better security to prevent domestic terrorism and after a large outage in North Carolina earlier this month that took days to repair.The first substation was vandalized at about 5:30 a.m. Sunday, followed by a second substation, according to Tacoma Public Utilities.3 Washington state electric substations vandalizedNazi symbols carved into menorah in Beverly Hills; man heldVandalism at Missouri elementary school includes a swastikaNorth Carolina blackouts caused by shootings could last daysIn all four cases, the sheriff’s office says someone forced their way into the fenced area surrounding the substations and damaged equipment to cause a power outage.Portland General Electric, the Bonneville Power Administration, Cowlitz County Public Utility District and Puget Sound Energy confirmed six separate attacks on electrical substations in Washington and Oregon in the previous weeks, according to Oregon Public Broadcasting and KUOW-FM in Seattle."