“And now--Piertotum Locomotor!” cried Professor McGonagall.
And all along the corridor the statues and suits of armor jumped down from their plinths, and from the echoing crashes from the floors above and below, Harry knew that their fellows throughout the castle had done the same.
“Hogwarts is threatened!” shouted Professor McGonagall. “Man the boundaries, protect us, do your duty to our school!”