Early in the year, the Department of Homeland Security (DHS) warned that domestic terrorists have developed “credible, specific plans” to attack the U.S. power grid and view it as a “particularly attractive target given its interdependency with other infrastructure sectors.” DHS warned of “physical damage” to electrical infrastructure, similar to the 2013 sniper attack on Pacific Gas & Electric’s Metcalf substation that damaged 17 transformers. Well, DHS was right on the money: this year, there…