Twenty-Fifth Air Force: 70 years in the Fight
By the mid-1960s, U.S. Air Force Security Service had installed AN/FLR-9 antennas, or ‘elephant cages,’ in strategic locations around the globe. By the end of the decade, seven antennas were in operation.

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Photo by: U.S. Air Force Photo |  VIRIN: 180913-F-IW100-004.JPG