Spike in Military Suicides: Is it reallly still such a mystery?

I've heard this issue discussed enough in congressional hearings; the questions are always asked, but there are never any answers...
Could the repeated (up to four!) deployments have anything to do with it?

From Gen. James Amos, the assistant commandant of the Marine Corps: "We have looked at the data to try to find answers that will enable us to address this needless loss of life.... The most likely cause is a failed relationship with a woman."

And I wonder why that's happening... would it possibly be related to the repeated deployments? Is it possible for anyone to deploy three or four times in seven years and not have some form of combat stress that would be extremely destructive if not treated?

And in many cases, it's not being treated, acknowledged, or understood. As for Congress, it seems they need to try a new tack.