In all the years since I have never had a single bad dream about my time in Iraq nor come close to having any of those same feelings as I did when I was a gunner in a humvee driving by a freshly detonated ied. The person I heard commit suicide, I have no idea what they had been through but it certainly didnt do it over their current deployment. The unit the guy was with had just gotten into Iraq a week or two before as they where the replacement for the unit my own was attached to so the guy had been done nothing so far but chill at Al Asad.
When I look at my Active Duty time stateside, there were still a lot of folks with issues. That isn't to say that there aren't folks that get deployed who are completely 'ok' and then come out as a wreck, because clearly there are...but the number of unbalanced dudes I knew in the Army was abnormally high. And that was w/o a war going on.
I was a civilian in Iraq, so that was kind of different. But they had a lot of issues, too. Some freakouts. I think part of that was the fact that when you recruit civilians to go overseas, a lot of them are folks who can't hold a job and are desperate, so you get some...interesting folks. Kind of like the Army, I guess. But I think most of the mental issues I saw with contractors was separation anxiety. The same dudes who spent every night in line to call via satellite to their wife and kids. Every. Night. Then it was us guessing how long someone would last after seeing them do that, because odds were good that they would bail before their contract was up.
But then again, I can't imagine how many of these folks would deal with being in combat. Especially when you're Active Duty, making shit for money, and you can't just 'quit'. People would bring their busted-up vehicles to us, and they had to clear them first. Ammo and weapons, sure, but also stuff like blood, etc. Had one guy bring in a hummer and was telling us that they had to hose out the inside. You knew that happened (had one guy I worked with who found hair/scalp and other body parts while working under a hummer, supposedly from someone who got run over) but I was super thankful that we didn't have to do that. But did the folks dealing with the aftermath at the units take it hard? I honestly don't know.
Part of me is happy that I never saw combat, but honestly, another part of me wishes I had. Part of me wishes I hadn't gotten hurt and had stayed in to do 20, but /shrug.