The Department of Homeland Security (DHS)/Federal Emergency Management Agency (FEMA) developed the National Incident Management System (NIMS) Guideline for the Credentialing of Personnel (the guideline) to describe national credentialing standards and to provide written guidance regarding the use of those standards. This document describes credentialing and typing processes and identifies tools which Federal Emergency Response Officials (FERO) and emergency managers at all levels of government may use both routinely and to facilitate multijurisdictional coordinated responses. Through this guideline, DHS/FEMA encourages interoperability among Federal, State, local, territorial, tribal, and private sector officials in order to facilitate emergency responder deployment for response, recovery, and restoration. This guideline also provides information about where emergency response leaders can obtain expertise and technical assistance in using the national standards or in ways they can adapt the standards to department, agency, jurisdiction, or organization needs.