This document provides guidance for evaluating drills and exercises related to oil spill response. It acknowledges contributors who helped create the manual. The manual contains background information on relevant terminology like the National Incident Management System (NIMS), Incident Command System (ICS), and ICS Planning P process. It also outlines different types of exercises like seminars, workshops, tabletop exercises, and games. The overall goal is to improve oil spill response through enhancing drill design, evaluation methods, and documenting lessons learned.