This glossary is intended to help incident responders by providing a consolidated glossary of terms related to incident command and incident management, emergency response, and emergency management. It is not a comprehensive, definitive, or exhaustive listing; it is simply a collection of terms, definitions, and acronyms, we've compiled together into a single document as a service to responders worldwide. If you have a term that you believe should be here, please forward the term and definition to us (firstname.lastname@example.org) so we can include it. This glossary is intended to be a collaborative effort. We hope you find it useful.