Docs via MuckRock show internal DEA training manuals instructing for
   parallel construction based on classified / illegally obtained
   information, combined with an internal review board to shield that
   information from the public courts.
   [1]https://www.muckrock.com/news/archives/2014/feb/03/dea-parallel-cons
   truction-guides/
   "Americans don't like it!"
   R

References

   1. https://www.muckrock.com/news/archives/2014/feb/03/dea-parallel-construction-guides/