The "voluntary" issue always comes up. Seems to me some people are forgetting a few things.People that have never been waterboarded are now hypothosizing about if experiencing it in POW training is more psycologically damaging then is forced to. A bit, no, QUITE a bit of a stretch to call ANYTHING at POW training vountary. Those folks were forced. There wasn't a show of hands for those willing to volunteer guys.
One, the terrorist who is waterboarded is not simply grabbed and waterboarded. At a minimum, he's taken from his cell, brought to the little room, and prepped. At this point, he's probably getting a clue. He's probably already been asked for the information many times but has refused. He now has a choice to make: Answer the questions or get waterboarded. If he answers the questions, he goes back to his cell when the questioning is finished. If he chooses not to answer, he volunteers to be waterboarded. He makes a choice.
Two, note the difference between that scenario and what happens in something like SERE training. You can't avoid the waterboarding unless you want to jeopardize your career. The terrorist has more of a choice than the service member does.
Three, even a terrorist knows we can't get info from him if we kill him. So to assume all terrorists assume that we are going to interrogate them to death is a foundationless assumption.