Intelligence officers Americans 4 Rapp, Mitch (Fictitious character) 3 Terrorism 3 Prevention 2 Assassination attempts 1 Assassins 1 Attempted assassination 1 Ballerinas 1 Computer security 1 Conspiracies 1 Corporations, American 1 Corrupt practices 1 Cryptographers 1 Economics 1 Economists 1 Energy consultants 1 Fiction 1 History 1 Imperialism 1 International relations 1 Popes 1 Publishers and publishing -- Fiction 1 Ryan, Jack, Sr. (Fictitious character) 1 Smith, Jon (Fictitious character) 1 Terrorism investigation 1 World War, 1939-1945 1 World politics 1