I would NOT recommend the Ex Pat lifestyle for a guardsmen or Reservist. Remember you have NO Userra protection so if you are activated your only choice is to quit. It is too big a risk. I did it for several years then retired when it just became too difficult to maintain currency. Many ExPat jobs are 6 weeks on and 2 weeks off. Your unit may not like you being gone for 6 weeks at a time. You are correct there is NO jumpseating allowed by Foreign carriers. The TSA jumpseat list also could not be updated and maintained. Many carriers have good travel arrangements like Korean and ANA but many in China are simply paid an allowance and you buy your own coach ticket with the occasional upgrade. Japan Airlines once had a reciprical jumpseat agreement with Northwest but both Northwest and JALways no longer exist. Vision varies extensively by nation but Japan doesn't like radial RK procedures. China allows you to wear glasses no problem. Do your research on each nations medical you are interested in. Being an ExPat is what you make of it but there are definite Pros and Cons which each person will rank differently. Best of Luck!