Maybe today it is. All I can do is refer to my time in the 75th in the late 80's and early 90's. We were told we couldn't talk about anything to anyone NOT in the unit. PERIOD. Even when we deployed for training, the only people who were allowed to be told when and where, were spouses. And yes, we were threatened with UCMJ prosecution if we violated OPSEC. At the minimum, you were booted from the unit.I also have to disagree with this as it is simply factually wrong. Everything you do while maintaining a Secret or Top Secret clearance is not classified. Not everything is OPSEC and I think that the military could do a better job explaining what information is OPSEC and what isn't because a lot of people run around thinking that every bit of information somehow relates to OPSEC.
Im sure shit is different these days for sure, considering how much is out in the open today. I used to ride on black helo's, and had interaction with Delta when the two groups were only a myth/legend. And I wish it was still the case..........