How about the fact I got a call yesterday that a first responder had killed himself? That's a pretty big impact.
How about a family that's broken apart with six kids? The person involved with PTSD is totally unable to cope with life, after asking for three or four years for help. The family breaks apart. There's no income, no disability payments. Those are just two of hundreds of thousands of issues in terms of the cost. I leave it to the others to comment as well, but it's very significant and it's a totally avoidable cost.