Scary. Just... scary. The thought of all that energy headed for thousands people who can't get out... and the Superdome thing sounds like a disaster waiting to happen. Even if it holds, what happens when the lights go out? Will it be the evilness or strength of human character that dominates?
Call me a pessimist, but I'm betting on evilness.
If the Dome doesn't collapse or anything, they're going to be in the middle of a lake with no power, water, or facilities for who knows how long.
My guess is the former, unfortunately.