Against an adversary willing, at the extreme, to exploit the full mass casualty potential of chemical and especially biological weapons to kill millions, “good enough” equates with an ability to sustain combat operations and to terminate those attacks before they reach that potential. The kinds of operational and other adjustments elaborated in this study do not promise this level of capability. An aggressor willing to wage a war of mass annihilation is an aggressor willing to confront the United States not at the conventional, but at the strategic level.