To my knowledge, there is nothing autobiographical in his talks which he has “changed from show to show.” This kind of insinuation really tarnishes a man’s word, i.m.o. There are selected talks in which, while reviewing an incident, he will add a detail not present in the others, but that is the only variation I have ever heard. And virtually all of the autobiographical stuff I have heard 3-4 times (because of the recycling of his talks on the radio especially). I heard this recently in one talk, wherein he added a very interesting detail of the oft-repeated story, that I had not heard in the previous, which merely provided an extra minor dimension and did not in any way compromise the details or contradict his previous accounts; in fact, if anything, the detail shed slightly more realistic (as opposed to fantastical) information about the incident.
I would not characterize his stories as “exaggerating” the truth (the facts). I would characterize them as providing color, like any good storyteller does. He generalizes, both for the sake of the narrative, and also frankly to protect identities. He does this when speaking sometimes of incidents in his priesthood, and very much so with respect to his life in Hollywood. He has named at least five quite famous entertainers, four of whom are still alive, and I’m actually surprised that their agents or publicists have not reigned him in on that, unless these incidents are already public knowledge which those stars have admitted to in other media (such as biographies or interviews). But I hardly think that they were false, because he could have been sued, if so, and all those tapes pulled. (And years after he produced those tapes, they are still running.)
I have not heard him specifically say that he was a Green Beret. I have heard him talk about special military assignments, missions, etc., which is quite believable. I’ve also heard him often say things like, “It wasn’t this particular [unit, mission, etc.] but if you know anything about [The Green Berets, The S.EA.L.S, the Special Forces, etc.], then you know it was comparable to being a member of [one of those].” All of the armed forces have a variety of special groups – and specialized temporary missions.