FBI investigating ‘military-style’ attack on California power plant | The Verge

The incident has raised concerns that the US government is not adequately protecting its physical infrastructure, focusing increasingly on cyber crime. “There are ways that a very few number of actors with very rudimentary equipment could take down large portions of our grid,” John Wellinghoff, chairman of the Federal Energy Regulatory Commission, said at a recent event sponsored by Bloomberg. “I don’t think we have the level of physical security we need.” However, although even nuclear power plants are known to be vulnerable, a concerted, militarized effort to attack them has yet to take place.

It’s probably nothing.  Now go back to sleep.