The document summarizes key aspects of emergency medical services (EMS) and disaster response. It outlines the history and development of EMS in Thailand over three periods. The key elements of EMS systems include manpower, training, communications, transportation facilities, and coordination with other agencies. EMS response occurs in six phases. The document also discusses approaches to disaster response, including the MIMMS framework, DISASTER paradigm, and triage methods like START and SALT. The goal in disasters is to do the most for the most casualties by effectively commanding resources, ensuring safety, communicating, assessing scenes, triaging patients, treating injuries, and transporting patients to appropriate facilities.