Federal memo warned of attacks on power plants

(NewsNation) — Days after what officials called a targeted attack on power substations in North Carolina, NewsNation has exclusively obtained a recent federal law enforcement memo that previously warned of similar possible attacks.The memo reads, in part:
Power companies in Oregon and Washington have reported physical attacks on substations using hand tools, arson, firearms and metal chains possibly in response to an online call for attacks on critical infrastructure. … In rece