The U.S. government is not prepared for a cyberattack that takes out power over a large area for weeks, or even months. A coordinated attack on Ukraine’s power grid last December left more than 200,000 people without electricity for a few hours. A cyberattack combined with a physical attack or with extreme weather conditions, could have devastating results, lawmakers said. Federal agencies are planning for a possible widespread power outage, FEMA’s Craig Fugate said. The electric grid is built to route around local points of failure, added Caitlin Durkovich.”]