The incident command system (ICS) and National Incident Management System (NIMS) are the same, and these terms can be used interchangeably: False.
ICS is an abbreviation for incident command systems and it can be defined as a subset of the National Incident Management System (NIMS) which is typically used for planned events, as well as for emergencies and coordinated responses in various business organizations or circumstances.
This ultimately implies that, incident command system (ICS) and National Incident Management System (NIMS) are not the same, and these terminologies cannot be used interchangeably because they mean different things.
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