Unfortunately, it's only been probably in the last 10 to 15 years that we've really started to track what's going on with respect to mental health outcomes. The best data we have with respect to mental illness as a result of deployment really starts around the Afghanistan time frame. I do know, though, that for our deployment to Bosnia there were no antimalarial medications, and we certainly have seen mental illness as a result of the deployment to Bosnia. Our use of antimalarials in Afghanistan was limited. We did a very strict risk assessment through the Directorate of Force Health Protection. Although the American forces were almost all on antimalarials, we gave them only to those who were going out into small regions on foot patrols in areas in which we thought they would potentially see malaria. Even given the limited use of antimalarials, which were primarily Malarone or doxycycline, we are still seeing a fairly significant amount of mental illness as a result of our efforts in Afghanistan.
On November 3rd, 2016. See this statement in context.