I just got a hold of my HR rep for the FIRST time since September the other day ?.
Since I'd heard from medical, I was curious about security, but I knew it was too early to ask for an update. So, I called my security POC and said something like, "As the end of my 60 days to get everything in approaches, I wanted to ensure I've submitted all required documents." Worked like a charm. Although I don't know if I'm cleared yet, I got a call back saying that "there is no further action you needed to take" and that my "security background investigation is already scheduled," whatever that means.