I'm not trying to be Mr. Negative, I'm more of a realist. Since 1970, hiring and airline bankruptcies have followed an algorithm of highs and lows. I think 9/11 throwing off the algorithm. Since 1970 we have had six economic downturns that have affected the airlines. 74-75, 80-83, 90-93, 96, 01-02, 08-09. Airlines being the first affected and the last to recover usually. With the retirements being so high with the baby-boom generation there will be steady hiring. But that could slow dramatically with another downturn in the economy. So as long as the larger aircraft are full, no worries. But if they are not, mainline could easily maneuver to "save our company".