I had the singular misfortune to get caught communicating four times in the month of May of 1969. They had a punishment room right across the courtyard from my cell, and I ended up spending a lot of time over there. It was also in May, 1969, that they wanted me to write—as I remember—a letter to U. S. pilots who were flying over North Vietnam asking them not to do it. I was being forced to stand up continuously—sometimes they'd make you stand up or sit on a stool for a long period of time. I'd stood up for a couple of days, with a respite only because one of the guards — the only real human being that I ever met over there — let me lie down for a couple of hours while he was on watch the middle of one night.