Three men are sitting stiffly side by side on a long plane flight.

After 30 minutes the man on the left suddenly says distinctly and confidently in a low voice: "General, United States Army, married, two sons, both surgeons."

After another half hour the man on the right reveals through a tight-lipped smile:

"General, United States Air Force, married, two sons, both judges. "

Yet another 30 minutes passes before the one in the middle with eyes twinkling, loudly proclaims:

"Chief Petty Officer, United States Navy, never married, two sons, both generals."