When a crowd gathers outside Les’s house, Steve comments, "Let’s not be a mob!” What does this show about Steve?

He has managed to remain much more calm and rational than the rest of his neighbors.
He has become the main instigator of the mob as they rush toward Les Goodman’s house.
He has been taken over by emotions and lost his ability to think sensibly.
He thinks the aliens are attacking the neighborhood and he must defend himself.