Well, it was a good run (actually, it wasn’t a good run at all…my bad): Independence Air, which hoped to bring low fares to Washington Dulles at the expense of United Airlines, its former partner, will shut down in January. Staff received letters yesterday saying that sometime between January 7 and 21, all locations will be closed. A bunch of people will be put out of work, and fares will probably rise in a number of their markets. The lesson here? You can’t offer lowfare service with high(ish)-cost regional jets, and never underestimate the power of other airlines’ frequent flyer programs.