Thanks for the insight! Like cresser1234, I tried absolutely everything I knew of (including combing through all the resources on militarycac.com). The one missing piece is that SystemCACertificate.
Does the keychain file have to remain on the desktop once I add it via Ryan's alternate suggestion, or can I just chuck it?
Also, since I'm having to go hunt for this keychain in the vastness of the interwebs, is there a particular version I need to be looking for (not quite sure how to tell)?
Thanks for fielding all these questions... I'm trying to avoid bricking my laptop like I did a few years back as I got a little too enthusiastic using terminal. Cheers-