Comments by "Vanessa" (@Vanessa-ok3ys) on "Debra Granik’s “Leave No Trace” Reveals The Bleak Reality For U.S. Vets (HBO)" video.

First of all they basically do, you have to be cleared for service as part of the enlistment process. Second, you can never be mentally prepared for that and it isnt possible to be unaffected unless youre a sociopath. In fact, the struggles veterans live with after the fact is proof in itself they WERE mentally well to begin with.
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