http://www.startribune.com/business/140349533.html A Delta Air Lines program that uses temporary workers for numerous positions at the Minneapolis-St. Paul International Airport is drawing fire from the carrier's full-time staffers who say it jeopardizes their jobs and pay. The program, called Ready Reserve, was rolled out at MSP last year and employs 165 seasonal workers. It's an extension of Delta's temporary workforce program already in place at all seven of its hubs nationwide. The MSP hub was unionized under Northwest Airlines, but after Delta bought the carrier in 2008, workers voted to get rid of the union. That allowed the company to bring the Ready Reserve program to MSP. Delta is the only major U.S. airline that has such a program.