The Bad Aibling Station is a satellite tracking station operated by the German intelligence agency Bundesnachrichtendienst in Bad Aibling, Bavaria.Created by the Western Allies in 1947, it was run by the U.S. National Security Agency until the early 2000s, when operations were gradually transferred to the BND due to public outrage over U.S. surveillance operations in Germany.As part of the global surveillance network ECHELON, Bad Aibling is the largest listening post outside Britain and the USA.