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Johnson says solar flares, pulse attacks among threats
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MADISON (AP) - U.S. Sen. Ron Johnson warned Wisconsin emergency officials they need to be prepared for electromagnetic pulse attacks and solar flares that could disable power infrastructures during a wide-ranging town hall meeting Friday. Johnson, the Republican chairman of the Senate Homeland Security and Governmental Affairs Committee, took questions for about 45 minutes at the state National Guard headquarters in Madison but did most of the talking. He began the session by warning that a pulse attack or a massive solar flare could have "horrific" effects on energy infrastructure.