The one by the display is quickly the target of a beam of red light from Regulus's wand, after which he makes sure to quickly change his position since the spell would have given it away.

Mikoto, having found herself short a target, will watch to see if the stunner Regulus used will work on these creatures. If not, she'll cast one of her own and see if that works, with the backup plan of using her knives if necessary.