Somebody attacked an electrical substation in California last year. This should make you concerned.

When we think about threats to America's energy infrastructure, we usually think about hackers. Hackers, or maybe, somebody taking a bomb to a nuclear power plant.

What we don't usually think about is some guys with guns.

According to a Wall Street Journal report by Rebecca Smith, last April a group of snipers cut the phone lines and internet access near a major electrical substation in San Jose, California, and then fired on the substation for 19 minutes, knocking out 17 transformers. Read the rest