The deployment is not over until you are home and once again "normal," if this nebulous "normal" state can ever be achieved. Because the fact is, you've been in a war zone and you have changed.
I'll speak in generalities. Most suicides in a deployed environment occur in the last month. Many service members, both male and female, are not ready to resume their responsibilities at home. You see, during a deployment every thing is taken care of for you so you can focus 100% on your job. There's no laundry, no cooking, no cleaning, no crying children and no nagging spouse. Of course there are different stressors in a war zone, but I've heard many people say that is what they prefer.
There's also the fact that once you are home, you can feel very detached from what's really important. There's two wars going on, but here I am in Indiana, totally useless. There are other soldiers out there fighting and I need to be with them doing my part. I have already started to feel this way. As I am leaving the area, I see a lot of Marines and Soldiers coming in. They all look so young and I only know 20% of what they are about to experience. I think this upcoming summer will be the most violent in the war thus far and they are going to be there in the thick of it. My heart breaks for them and the heavy burden they carry on their shoulders. Every time I hear of a US service member dying, I become sick.