clt46910; We're all learning as we go along here. That's what's so great about the "web", loads of information for the picking. And in an instant too, unlike reading it up of times past on printed matter. But this is not to say that books are an outdated method of research and information. On the contrary, there's much to be "rediscovered" in generally out-of-print and old books. Specifically, "facts in text" which more often than not are lost in time, getting repeatedly changed or requoted partially through 3rd party transcripts. Only, don't stake your life on everything you read either in books or on line, except those from genuine bladed experts who stake their reputation and make a living on their works. BTW, the Nam SOG blades are pricy because of "war tales" which don't ever seem die.