I guess it's trying to establish a base from which to measure that. I think you would want to measure just to see if in fact what you're doing--the preparation of the soldiers prior to entering combat or whatever--is successful.
The other thing I want to ask you about is the involvement of the families. I would imagine that this would be a case-by-case type of initiative, but how do you engage the family in the treatment of a veteran who may be dealing with the syndrome?