[1]https://www.zerohedge.com/news/2018-01-29/fitness-
   tracking-app-accidentally-reveals-secret-us-military-
   bases-cia-black-sites
   An interactive online fitness tracking map published in November of
   2017 which compiles a running history of the location and routes of 27
   million fitness-device users has unwittingly revealed the location,
   staffing, patrol routes and layout of U.S. and foreign military bases
   around the world.

References

   1. https://www.zerohedge.com/news/2018-01-29/fitness-tracking-app-accidentally-reveals-secret-us-military-bases-cia-black-sites