Trained at the Defense Language Institute in Monterey, California. Prime duty. Might be where he got his pilot's license.
Thanks, I checked the Wikipedia
http://en.wikipedia.org/wiki/Defense_Language_Institute and this institution grands AA degrees, which is far away from the psy-ops educational requirements.
This type of teaching establishment have their own occupational risks, which I think Churchill summed the best: ability to squeeze the maximum of words into the minimum of meaning.
This would also completely explain Inaba's dialectical habits. Given the sentence "two plus two equal five", he would correct it to "two plus two equal
s five" or complain that it isn't a well-formed sentence but just a clause.
In my opinion that has more in common with "verbal tic" than a highly skilled social technique. I've met unquestionably highly educated people who to the end of their life couldn't get rid of similar language habits learned in a mediocre language schools (religious, not military). This ELIZA technique is frequently used to quickly approximate a fluent speech.