I never expected to write this letter, but my Mom e-mailed me to get information about my career for a writeup on Veterans Day, and as this is the first such holiday in 22 years when I will not be on active duty, I felt compelled to let you know why I decided to quit. Quit is a strong word, I know. Everyone I’ve talked to has repeated that I’ve had a marvelous career and that I’ve retired with honor. Maybe that’s true on paper; I guess that it’s reflected by the record. But that’s not how I feel. I...