"Attack Ravages Power Grid. (Just a Test.)"
"WASHINGTON — In windowless rooms from here to California, nearly 10,000 electrical engineers, cybersecurity specialists, utility executives and F.B.I. agents furiously grappled over 48 hours with an unseen 'enemy' who tried to turn out the lights across America. The enemy injected computer viruses into grid control systems, bombed transformers and substations and knocked out power lines by the dozen."