This book attempts to determine whether the United States has appropriately scaled its maritime response to humanitarian disasters within the Pacific Region. The presence of excess capacity presents a number of difficulties and may indicate a failure to properly anticipate the operational environment due to the distinctive humanitarian nature of disaster assistance operations. By examining the maritime responses to the 2011 Great Japan Earthquake and tsunami, as well as the 2004 Aceh Earthquake and tsunami, I will look for consistencies in response and possible instances of excessive force laydowns in light of each respective disaster scenario. I believe this book will indicate instances within which U.S. maritime assets do not undertake the role as primary agent in delivering aid and therefore fill operational space with capability that is either excessive or ill suited to the host nation.