roll on columbia.

From MSNBC, unfortunately:

U.S. OFFICIALS told NBC News that evidence found in Afghanistan also showed plans to attack other targets in Washington state, including massive hydroelectric dams, including the Grand Coulee Dam. The dam is one of the world’s largest concrete structures and the main power-generating site on the Columbia River — one of the nation’s biggest sources of electricity.

I think I get it. It's a big ass dam.