You can find neat stuff by adding site: qualifiers as well, like:<p><a href="https:&#x2F;&#x2F;www.google.com&#x2F;search?q=not+for+public+release+filetype:pdf+site:.mil" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;search?q=not+for+public+release+filet...</a><p>or<p><a href="https:&#x2F;&#x2F;www.google.com&#x2F;search?q=top+secret+filetype:pdf+site:.gov" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;search?q=top+secret+filetype:pdf+site...</a><p>and<p><a href="https:&#x2F;&#x2F;www.google.com&#x2F;search?q=&quot;five+eyes&quot;+filetype:pdf+site:.mil" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;search?q=&quot;five+eyes&quot;+filetype:pdf+sit...</a><p>etc.