The US power grid is suffering military style attacks.

via The Daily Mail.

The FBI is investigating a ‘military-style’ attack on a California electric power facility earlier this year.
The April 16 attack saw as many as two gunmen storm the PG&E Metcalf substation after severing phone service and fire several dozen rounds at transformers.
Federal officials took over the investigation from local law enforcement on fears it was linked to the Boston marathon bombing only a day earlier, but those fears appear to have subsided.
At least one person, maybe two, went down multiple manholes at the facility in a San Jose suburb and cut fiber cables leading to the substation, according to Foreign Policy, which detailed the well-planned attack.

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The FBI is also investigating a series of attacks on the Arkansas power grid where multiple high-voltage transmission lines were severed and one substation was set on fire, according to the New York Times.
‘You should have expected U.S.’ was scribbled on a control panel at the torched substation.
There is no indication the attacks in Arkansas and California are related.

Read the entire article here.

Interesting.  Quite honestly I'm surprised that we haven't suffered "brown outs" in the past few years.  I do know that security for our infrastructure has increased so the success of these attacks is a bit troubling.

But I'm sure a reader or two will point out how this is nothing new and nothing that anyone should be concerned about.