sot: stacie varley / pennsylvania 1:12--1:16 "no, you can't worry about it all the time or you wouldn't go out and enjoy yourself." optimism ... tempered with vigilance ... as a new year approaches. audio outcue: "brian mooar, nbc news, washington." the state of missouri is in a state of disaster tonight as people continue to deal with historic flooding that's been going on since last weekend. bridges and highway overpasses are now under water in the town of valley park just outside of saint louis. 12 of 14 reported deaths related to teh flood were caused by high water sweeping away cars and other vehicles, according to state officials. governor jay nixon has declared a state of emergency and guard to help with evacuations. "this is going to be awhile, you dont have this much water over a place with population and business and a lot of public assets, and the water goes down it's not over." today, the governor r ured flooded areas near saint louis. the u.s. army corps of engineers are closely monitoring 19 levees deemed highly vulnerable--bus so far all are holding up. right now there's