A strike by Northwest Airlines pilots would leave many people in the Dakotas and greater Minnesota stranded without alternative transportation. Northwest dominates the air service and other carriers aren't able to pick up the extra passengers. Bus routes are available once or twice a day but as Minnesota Public Radio's Cara Hetland reports in the event of a strike people are better off staying put or driving to where they want to go. It isn't easy getting where you want to go from Sioux Falls. For example to get to Fresno, California passengers fly first to Minneapolis then to Salt Lake City, next to Los Angeles - finally, to Fresno. Still Northwest has more than 50 percent of the market share for the area. In the event of a strike five-hundred people a day would have to find alternative trans