I have run across quite a few LE's and Military (active) people that seem to require further investigation when doing BG checks. Not sure if it's security clearances or HLS issues, but for whatever reason, it is happening. I have noticed that E-check submission seldom have any delays, while calling in BG checks run the gauntlet so to speak. Here in Wisconsin handguns go through the state agency, and that too sometimes gets some delays. I always wondered if it had to do with retrieving different files off the computer system, and the agents weren't quite sure how to expedite it, so they just put a delay on it and call back later.
In any case, for what it's worth, you are not alone by a long shot - but I'm sure that is of little consolation......