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Use "codename" in a sentence
"Some threats to Mr Obama, whose Secret Service codename is Renegade, have been publicised, including an alleged plot by white supremacists in Tennessee late last year to rob a gun store, shoot 88 black people, decapitate another 14 and then assassinate the first black president in American history."
"However, I can't decide if the "Project 7734" codename is delightfully retro or irredeemably goofy."
"Bob Russell - so boring his secret service codename is Bob Russell."