The national banking crisis continues to play out locally this week with a series of uncertain headlines concerning D.C. area banks. First earlier this month we learned that Bethesda-based Chevy Chase Bank was for sale, and that Citigroup was in talks to buy it. But then, as you’ve all heard by now, Citigroup’s stock started to plummet because every investor in the world right now is having an hourly anxiety attack, which led most folks…