Do read Leo Thorsness, if you haven’t:

Our SRO turned out to be Ned Shuman — a really good Naval aviator. The first Sunday in the large cell, someone said, “Let’s have church service.” Good idea, we all agreed. One POW volunteered to lead the service, and we started gathering in the other end of the long rectangular cell from the cell door. No sooner had we gathered than an English-speaking Vietnamese officer who worked as an interrogator burst into the cell with a dozen armed guards. Ned Shuman went to the officer and said there wouldn’t be a problem; we were just going to have a short church service.
The response was unyielding: We were not allowed to gather into groups larger than three persons and we absolutely could not have a church service.
During the next few days we all grumbled that we should not have backed down in our intention to have a church service and ought to do it the coming Sunday. Toward the end of the week, Ned stepped forward and said, “Are we really committed to having church Sunday?”
There was a murmuring of assent throughout the cell. Ned said, “No, I want to know person by person if you are really committed to holding church.”
We all knew the implications of our answer: If we went ahead with the plan, some would pay the price — starting with Ned himself because he was the SRO. He went around the cell pointing to each of us individually. “Leo, are you committed?” “Yes.” Ned then moved to Jim and asked the same question. “Yes,” Jim responded. And so on until he had asked each of us by name.