Harry and Hermione slowly and visibly flew towards the other four buckets and introduced themselves. Each bucket had two Disillusioned MMA professors in it. The other eight professors told Harry and Hermione that their job at the moment was to lean over the brick wall and to cast curses down on the Death Eaters, then to duck back to safety. These Muggle-born professors were not interested in Stunners, Disarming Charms or Incarcerouses—the spells that the MMA professors cast at the Death Eaters were intended to make the Death Eaters die screaming.