reporters obtained a “free sample” of location data from a Florida broker—3.6 billion coordinates tied to roughly 11 million phones in Germany over a two-month span.
Inside it were the daily movements of American military and intelligence personnel stationed in the country: 12,313 devices that passed through at least 11 US installations, from the Army's European headquarters at Wiesbaden to the schools where service members’ children are taught. Reporters traced devices inside Büchel Air Base, where US nuclear weapons are believed to be stored in hardened bunkers, and watched others zigzag through an armored-vehicle course at Grafenwöhr—one of the bases that a pair of alleged saboteurs had been arrested for scouting months prior.
— WiredReplicated under Fair Use from The Pentagon Knew Enemies Could Track Troops’ Phones for Years. Now They Are by Wired.