The Secret Service code names used by 12 presidents and first ladies — and the stories behind them
Add Yahoo as a preferred source to see more of our stories on Google. A Secret Service agent stands guard as US President Barack Obama answers questions during a town hall event at Benedict College in ...
The 35-year-old saga of Kryptos, an enigmatic sculpture containing four encrypted messages outside the headquarters of the U.S. Central Intelligence Agency, recently took a bizarre twist.
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