It's his gf.
I was just reading about Tornado Sirens due to this, and it says after WW2 they were used incase of Nuclear Attack, seriously what use could they possibly be? You're a gona if there's a nuke coming.
Over here in the US, in the 50s I think. They use to tell school kids to hide under thier desk. I know it sounds like a joke, but look it up sometime.