For what it's worth, every branch of the military has its own criminal investigative arm, as well as its own security. While the vast bulk of this is limited to

For what it's worth, every branch of the military has its own criminal investigative arm, as well as its own security. While the vast bulk of this is limited to jurisdiction on military installations, they can't help but venture out sometimes. My wife used to work as part of a classified Naval air unit working on experimental radar, for instance, and they couldn't do everything on a Naval base. Every now and again, some people wearing AT&T coveralls or something that got too close would be kindly apprehended and escorted somewhere else by unmarked black SUVs that were part of NCIS. But what else are they supposed to do? The local police aren't cleared to know what's being guarded, either. They'd get apprehended and have their phones wiped, too.