[Snape seems to be in the air, dodging the balls of fire falling out of the sky as he tracks Killua from the sky. The PCD is clipped to his belt, and he has no time to bring it up to his face.]

Either spit out what it is you want or get off the line, girl.

[He doesn't recognize the voice without a face to attach to it, but it's not completely unfamiliar.]

I think Regulus is in trouble.

[Her tone is positively military.]

You're Severus, aren't you? He snuck out to find his brother, and his PCD has gone dead.