I spent 10 years active in the USAF during the Vietnam era. I did not make it over there as there was not too much demand for my allied medical profession there, there usually being only one or two pharmacists in country, but instead spent two years in Turkey. Called up later as reservist for Desert Storm, at a contingency hospital in the UK, so luckily have never seen combat or been in a combat zone as many thousands of service personnel. I did have to deal somewhat with those who returned from those combat zones, and even worse with the families of those serving in those zones and the one who had lost loved ones. Even being detached from the immediate ugliness it is sometimes difficult to deal with the long reaching costs.