The fed. gov¿t. responded to the 9/11 terrorist attacks and the subsequent anthrax attacks with increased focus on and funding for biodefense. High-containment labs. (HCL) play a critical role in the biodefense effort, offering the hope of better responses to an attack and a better understanding of the threat posed by bioterrorism. However, they also could increase the risk of a biological attack by serving as a potential source of materials or training. Policymakers have become increasingly interested in the oversight of these facilities following reports of accidents, regulatory noncompliance, and community resistance. A key task for policymakers is to define their goals for enhancing oversight of HCL. Illustrations