Since our first look at President Obama’s initiative to improve the nation’s power grid, I’ve been digging a bit deeper into some of the security threats which the aging infrastructure poses, as well as the inefficiencies in the current system. I follow up on the topic today in my next column at Pajamas Media, so dive in and be frightened. (Not in the Halloween way. This is real.) Terrorists have already knocked out large sections of the grid in South America, securing blackmail payments from governments there before they would turn the power back on. Could it happen here? Some analysts are already convinced that not only could it happen, but it will. And soon.