On a less-technical note (and we will get back to electricity), the Arlington County Public Library held their annual Truck Day today. Here’s a panoramic shot that shows many but not all of the trucks. The fire truck was there for a while, but had to leave for a fire. The police swat truck is on the far right, and beyond it you can see the bus. I wouldn’t have expected it, but the longest lines were to get on the bus!