It may be impossible to protect the North American grid against catastrophic events | Homeland Security News Wire

It may be impossible to protect the North American grid against catastrophic events | Homeland Security News Wire: "Making sure the North American grid continues to operate during high-impact, low-frequency (HILF) events -- coordinated cyber and physical attacks, pandemic diseases, and high-altitude nuclear bomb detonations -- is daunting task; the North American bulk power system comprises more than 200,000 miles of high-voltage transmission lines, thousands of generation plants, and millions of digital controls; more than 1,800 entities own and operate portions of the system, with thousands more involved in the operation of distribution networks across North America.