Nukes and Covenant shields In *Thursday War*, the UNSC Port Stanley poses as a Kig-Yar pirate ship and destroys a couple ships the Arbiter has to maintain the balance of power. It does this with nuclear warheads.

Is this an example of inconsistent lore? In my (admittedly shaky) recollection, Covenant shields have always been able to take nukes grinning. That was the whole drive behind MAC cannons as a widely adopted armament. Why then was the Port Stanley able to so easily destroy several ships with them?