ALTHOUGH THERE ARE many different ways to attack critical infrastructure, one of the most effective is to go after the power grid, since electricity is at the core of all critical infrastructure. Cut the power for a prolonged period, and the list of critical services and facilities affected is long—commuter trains and traffic lights; banks and stock exchanges; schools and military installations; refrigerators controlling the temperature of food and blood supplies; respirators, heart monitors, and other vital equipment in hospitals; runway lights and air traffic control systems at airports.
