The one thing they can't escape right now, is the growing fear and panic they are feeling.  Glad you pointed that out. It makes up for the time they would spend in Gitmo preparing for their untimely deaths. This way, they don't get that luxury of succumbing to the inevitable in any easy way. Instead they suffer every waking moment, and sleep with the nightmares of what awaits them. All of the evil deeds they have engaged in throughout their lives will loom large and they can't escape the thoughts.  The screams of tortured children are not for nothing.