The Doctor: Ah, Brigadier!
The Brigadier: Ah, Doctor, we must get moving… (He turns to see the Doctor dressed as a Viking warrior.)
The Doctor: Is something wrong?
The Brigadier: You've changed.
The Doctor: Oh no, not again!
The Brigadier: No, I didn't mean your face. I meant your clothes.
The Doctor: Don't you like them?
The Brigadier: UNIT is supposed to be a security organisation.
The Doctor: Do you think I might attract attention?
The Brigadier: It's just possible.