ones. southwest is the only carrier that balked. remember, southwest's model is flying the airplanes over and over again, as many as seven times a day. the 737 300 was 15 years old and had 39,000 cycles, again, takoffs and landings. 20-year-old planes have 55,000 to 60,000 cycles. southwest was fined $10 million for failing to check planes and flying them anyway. now, southwest, as you said, has grounded 79 planes and found cracks in three more of the fuselages and this, of course, will lead to many more inspections of many more airlines. it's interesting, back in the '80s, the mechanics had an easy way to check for cracks. they would go over the plane and look for the nicotine stain.