This class covers the initial on-scene size-up for the first-arriving officer at incidents. It sets up the framework for the entire fireground experience from assessing the incident scene arrival information to setting up an IMS organization. Through lecture and individual scenario assessment, students will use a systematic mental checklist using the CASH acronym (Command, Actions, Size-Up, and Help) for on-scene size-up reports that can be used at all incidents. Topics include the establishment of command, the 13-point size-up factors, first-due company assignments, and additional resources that will be needed. A plus for promotional exams.