For some forty years an incredible variety of adversaries had tried to "spoof" American satellites. To hack and "own" a supersecret American KH-11 Keyhole or Aquacade in orbit—that would be a huge accomplishment in espionage, a much bigger deal than Falcon, or Snowman, or Jonathan Pollard. Huge enemy effort had been wasted in this. Nobody—not the Chinese, not the Russians, not even the French or the British—had ever touched America’s supreme technical command of telemetry, systems acquisition, phase-locked carrier tracking loops, phase-coherent tracking, and stochastic integro-differential hybrid multichannel carriers.