From "Doctor Who: The Seeds of Doom: Part Five (#13.25)"
Sir Colin Thackeray
[on phone, trying to get UNIT support for the Doctor
] This is Sir Colin Thackeray. I am aware that the brigadier's in Geneva. I must speak to a senior officer. This is a matter of national security. Yes, national security.
Invent a code word, they love that. What about "Operation Nuthouse?"