Mr. Arvodair calls out, "Everyone back away, I am calling forth Aissah. Kaen, back up to the southeast corner of the building. Once you are there and protected and the roaches are on you again, shout that you are ready. Once I open, let Aissah get the first blast in; then drop your thingummy and bolt outside."
Spoiler: Everyone except Kaen
Show
He rubs his lamp and Aissah forms again. "Man inside with lots of roaches. He's going to take cover to the southeast. Ready when he calls me I will open the door."

I will assume everyone backs away, unless you say otherwise.

Kaen, inside, how do you respond?