This document discusses disaster drills, which are simulations of emergency situations conducted to educate personnel and test emergency response plans. It defines disaster drills and describes three common types: tabletop drills, functional drills, and full-scale drills. Key aspects of designing effective disaster drills are outlined, including defining objectives, crafting scenarios, and planning activities. Guidelines are provided for roles in drills, such as incident commanders and evaluators. The document emphasizes that regular drills are important to identify weaknesses in plans and increase staff confidence and coordination in responding to emergencies.