I do not think the black guy is a bad guy. He is Jericho's "John Lock" where his intentions are good just there is more to him than we know at this point. When he wrote down that information in morse code he was really, really shocked and almost started crying. If he were part of a terrorist organization he would be happy because we assume the list of cities he wrote down were cities that are destroyed.
At first I didn't think the show would be good, I figured it would take a season before they started to venture out of their town. However, it looks like next week week they begin to try to figure out wtf is going on. I also did not like the prison bus subplot, but it looks like that is going to be wrapped up pretty soon.
I'm curious about one thing:
The President of the US was giving what looks to be a State of the Union address when the bombs went off. It's impossible terrorists were able to smuggle in enough bombs to hit each major city, so the nuclear bombs had to of been from ICMBs. China, or Russian. NORAD was not asleep at the wheel, and about thirty minutes before the bombs started hitting the cities the President would of been rushed to Air Force One or a bunker in DC. I believe the US military would have about thirty minutes to see incoming ICMBs and launch our own. However, for whatever reason we can be assured DC was hit in the middle of a huge event, where pretty much the whole US federal government was vaporized. If I recall they always put a member of the President's cabinet in a safe place, so the new President of the US could be the Secretary of Agriculture.