For a variety of obvious reasons, the federal government today is cracking down on aviation security nationwide. Whether or not the attempt will succeed is anyone's guess. I speak from experience. A few months back, I successfully bid on an E-Bay item, advertised as a CD-ROM B-737 ground-school course. I was sure that Boeing had made such a CD-ROM, but there was no particular indication that such an object would contain sensitive or even proprietary information. The ad described the manual as "siimilar to that used by major airlines." So I made the purchase and, in good time, the instructional...