Operation core personnel are the first responders who are allowed to perform some defensive actions, but, with some exceptions, and are not expected to come into contact with hazardous materials.
Responders at the operations level are expected to defend against the effects of the leak in order to safeguard people, the environment, and property.
Responders at the operational level are those who respond to releases or possible releases of hazardous materials or CBRNE as part of the initial response to the incident with the goal of shielding nearby people, the environment, and/or property from the release's impacts, prevent from spreading.
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