Dude, I have explained it many times. All military sites are monitored by Counterintel. You don't have a choice.
Only the Marine Corps and Army have dedicated CI. The Navy, Air Force, focus on criminal investigations. With sex assault and harassment both were overwhelmed and were limited even further in CI.
We have known about it for years. It was the preferred comms for NK and China for a long time. Then the NSA hacked it.