Sorry if this is a repost but I wasn't able to turn up anything. I'm sitting in a room in SF and just saw this on the news even though it's almost a year old.

I'm surprised I've never seen anything about this before.

http://www.npr.org/blogs/thetwo-way/2014/02/05/272015606/sniper-attack-on-calif-power-station-raises-terrorism-fears

The attack began just before 1 a.m. on April 16 last year, when someone slipped into an underground vault not far from a busy freeway and cut telephone cables. "Within half an hour, snipers opened fire on a nearby electrical substation. Shooting for 19 minutes, they surgically knocked out 17 giant transformers that funnel power to Silicon Valley. A minute before a police car arrived, the shooters disappeared into the night.