someone may have mentioned this already, but in the protectopedia it says that stacking is not possible. yet, one of the tips that pop up under the map says the opposite. i believe the mistake is in the protectopedia as it seems to me that special attacks do indeed stack.
 "Protector"){kind=icon}
 "Nightmares of Leia Ray"){kind=icon}
 "Johnny Rocketfingers"){kind=icon}