This document outlines standard operating procedures for Rapid Intervention Teams (RIT) and "MAYDAY" procedures. It defines key terms like IDLH and Incipient Stage Fire. It describes RIT composition and duties to track and rescue emergency personnel. It provides guidance for RIT implementation, including equipment, tracking entry teams, and deploying for a trapped firefighter. It also covers procedures for a firefighter to call a MAYDAY and the required response from command and other crews.