Yep, the NSA has their own “Bletchley Park”.
Nonsense. The NSA may “attempt” to monitor VHF communications that it intercepts... The problem is that most of what it intercepts will be unintelligible garbage. Unlike cell phone communication that is dependent on tappable communication points to relay the signal, VHF radio is supremely suitable to short-distance tactical communication. Even with ad hoc encryption, the resources required to decipher and understand the intent of such signals would very quickly overwhelm the NSA’s available resources.
This is the reason that Amateur Radio has fallen out of favor with the deep state apparatchiks. It’s simply impossible to “hoover up” all of the radio traffic and sort it out... First you have to be where you can receive the signal. That eliminates any chance of 100% monitoring.