"for official use only" or "U//FOUO" brings up interesting results, the pdf "U//FOUO Sovereign citizens extremist ideology" by the FBI was a good read so were all the Interpol recent internal reports about all their weapons that have been "misplaced" or stolen.
Comments
You can find neat stuff by adding site: qualifiers as well, like:
https://www.google.com/search?q=not+for+public+release+filet...
or
https://www.google.com/search?q=top+secret+filetype:pdf+site...
and
https://www.google.com/search?q="five+eyes"+filetype:pdf+sit...
etc.
"for official use only" or "U//FOUO" brings up interesting results, the pdf "U//FOUO Sovereign citizens extremist ideology" by the FBI was a good read so were all the Interpol recent internal reports about all their weapons that have been "misplaced" or stolen.
Some times people are ignorant but sometimes they are clever.