5 P.M.FEB. 8, 2014
According to a Wall Street Journal report, a team of unknown individuals first cut phone lines at a nearby underground vault and then using sniper fire crippled 17 giant transformers. Disruption to the California power grid was minimized, but in different circumstances, the attack could have yielded mass blackouts. Jon Wellinghoff, former chairman of the Federal Energy Regulatory Commission, called it “the most significant incident of domestic terrorism involving the grid that has ever occurred” in the U.S.