北朝鮮核開発問題

If you need to discuss classified information, you can use the STU-III in non-secure mode to place a call to another party who also has a STU-III. After the connection is made, you ask the party receiving the call to"GO SECURE". You are the other party then put your crypto-ignition keys(CIKs)into the phone terminal,turn them on and press the SECURE button.