They are deeply entrenched, it all started with the National Security Act of 1947, Truman signed it into law.  This abolished the War Department and created all the intelligence agencies, with the Navy being at the head of the table, as the Senate confirmed James Forrestal as the first Secretary of Defense.  Now Forrestal in his later years started to speak out about what was going on, hence why he fell 16 floors to his death at the Bethesda Naval Hospital deemed as a suicide. You may not have noticed draining the swamp includes the military industrial complex, ie. Naval Intelligence.  Many have been cleaned out but there are still more entrenched.  White Hats recently cleaned out China Lake, which was a major MkUltra facility.  A lot has been done you can find out with research, most hidden but is out there.  Happy Hunting!