http://www.thenewstribune.com/2010/07/29/1281434/city-signs-off-on-digital-billboards.html
(click on any images to view it at a larger size)
When Clear Channel did their visual attack on the city back in 2007 by having every billboard say simply "Constitutions Matter" is when I noticed how many billboards there are in Tacoma. Some vigilantes took it upon themselves to deface the billboards.

Here's a behind the scenes look at the True Grit comic "Psychic Attack"
I had a few different ideas in the beginning:
Poltergeist, "They're Here"

"Grandpa Grumpy vs the Late Night Skaters"

I decided on "Psychic Attack"

