David G. Bronner: America's infrastructure

  Recently it was revealed that snipers took out 17 of 20 large transformers in about 20 minutes at a Silicon Valley PG&E substation last April, requiring 27 days and $16 million to repair. The California attack on the PG&E substation is considered "the most significant incident of domestic terrorism involving our power grid that has ever occurred," according to the former chairman of the Federal Energy Regulation Commission (FERC).