very stark environment there and to come back, it's going to be going from sensor underload to sensory overload. >> in a swalituation like this, doctor, when does the army decide to reintroduce someone like this to his family? >> well, that's a clinical judgment. everybody who is -- clearly the army is very good at this. who they are reintegrating, decompressing progresses at a different rate so the clinicians on hand can make the decision when he can tolerate that. >> dr. paul ragan, thank you so much. 13 deaths. that's the number that gm has agreed to. why is gm suggesting that the number could be higher? coming up, my interview with