I hold it also. I actually sent a note to Mike Pyle, the CEO, a couple of weeks ago when it suddenly dropped about 8% for no apparent reason. I got a very speedy response (on a Friday evening no less - most impressive!) stating that management continued to be very comfortable/bullish with operating performance - that he and other insiders had been purchasing stocks - and that they anticipate good results when they report their next quarterly results. I too will continue to hold.
The only possible fly in the ointment that I can see is that the proposed new regulations on pilot working hours may increase their expenses at their airline operations.