there may be added strain of reintegrating into American society where there are considerably more grey areas when it comes to how things work. That's probably not as easy as many may think. This could partly explain the sense of the PTSD recurring only while here but not while on the mission. Yeah they may be too busy focusing on the mission to think about it, but somehow I think theres probably more too it.
Could be wrong but might be right, probably worth looking into.
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