Well, this went just about as wrong as it possibly could have. Jack rushes outside with the other heroes who had been ready to defend the Observatory, only to learn that wasn't the target at all.

Jack's method of helping might be...unorthodox, the dress, wig, and heels might not look like he's ready for battle, but he can help his group better than they might expect. As he starts to dance, magic flows out of his movements to buff up everyone grouped up with him.

It's the initial dance of the Performer class, Love Power: Allows allies to attack twice in a row...So long as Jack can keep it up.