Agreed. I have noticed the oft-used header of this "veteran with a security clearance" uses. When someone advertises like this, this a red flag. Having a security clearance, especially in the military is really common. In the United States, the number of people having security clearances is in the millions. And with each level of security clearance comes a different level of compartmentalization. For example, on nuclear subs top secret clearances are very common. Each clearance is compartmentalized. A fire control missile technician having a top security clearance is not privy to the areas of the nuclear reactor and propulsion of the submarine. The same is with cryptographer area.

So, you saying this guy has no special inside baseball, you are most likely right. I also noticed the sudden appearance of individuals like this. My instinct is too pause and not get sucked in, but to analyze everything about the individual, including their background.