I would start with the family support issue. I agree with you that in theatre, as Colonel Hetherington said, living very closely together, it's a very tight-knit community. Those bonds tend to break when you come back home and go back to your own life with your family. Single soldiers clearly have greater challenges, since they don't necessarily have families to go back to on the bases to which they're posted.
But the issue in my mind is not whether the medical system is able to support them. The medical system is there for them. The challenge we face is getting them connected with the medical system to identify them, or have them identifiy themselves, so we can get them the help they need. That's an ongoing challenge, and it really rolls into the reservist issue in very much the same way.
I speak again from my time in western Canada. The challenge I faced working with reserve unit commanding officers was keeping track of reservists who went back--making sure we kept an eye on them and that they went through the screening process. The hard part is when a reservist comes back and gets out of the military. He loses not only that peer support group he had in theatre, but whatever support his unit could give him. That does cause me concern--how we can continue to track them.
At the end of the day, I don't think it's because people are not concerned and not trying. The system's not perfect, and if there were an easy solution we would have put it in place by now.