It was the sort of rumination that on any other day would soon have been cut short by the arrival of an email or a text message, but as he hiked up the valley of the Blue Fork at the head of a column of sweating and muttering jihadists, none of whom especially wanted to talk to him, he had plenty of leisure to consider it. Which seemed to be getting him absolutely nowhere. But he did try to enjoy the smell of the cedars and the blue of the sky while he still had the equipment to do it with.