The story changed from the guard using a sandal to the guard using a stick.
At Saddleback, McCain talked about a single guard being the protagonist. The same guard loosened his ropes and then later sketchd the cross in the dirt. In McCain’s 1999 book, these were two different guards at two different prison camps.
McCain’s first writings about his time in captivity didn’t mention the story at all, so he’s asked his readers for evidence of McCain offering that story prior to his 1999 book (when he was gearing up for a presidential run).
Many years ago a scared American prisoner of war in Vietnam was tied in torture ropes by his tormentors and left alone in an empty room to suffer through the night. Later in the evening a guard he had never spoken to entered the room and silently loosened the ropes to relieve his suffering. Just before morning, that same guard came back and re-tightened the ropes before his less humanitarian comrades returned. He never said a word to the grateful prisoner, but some months later, on a Christmas morning, as the prisoner stood alone in the prison courtyard, the same good Samaritan walked up to him and stood next to him for a few moments. Then with his sandal, the guard drew a cross in the dirt. Both prisoner and guard both stood wordlessly there for a minute or two, venerating the cross, until the guard rubbed it out and walked away.
I don’t know where all this is headed. It makes me very uncomfortable questioning someone’s POW camp memories. It’s possible this did happen but that McCain originally viewed the moment has being largely about the goodness of the guard, rather than his own faith. That would be a campaign misdemeanor, not a felony. But if this turns out to be substantially altered or made up, it will be absolutely devastating to McCain