"'Spy Rocks' Could Be Military's New Secret Weapon | http://Wired.com http://www.wired.com/dangerroom/2013/10/spy-rocks/ …" This stuff's as old as the Cold War
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"'Spy Rocks' Could Be Military's New Secret Weapon | http://Wired.com http://www.wired.com/dangerroom/2013/10/spy-rocks/ …" This stuff's as old as the Cold War