responders
n. plural-onlyn. people who have a special job to help others during an emergency. You usually use this word for police officers, firefighters, and medical workers.
n. individuals who are among the first to arrive at and provide assistance at the scene of an emergency. Often used in the plural to refer collectively to emergency services personnel.
The responders arrived at the scene within minutes.
Local responders worked through the night to clear the debris and ensure everyone was safe after the storm.
The city's emergency management plan relies on seamless communication between various responders to ensure that medical and fire services are deployed efficiently during a large-scale crisis.
While the singular 'responder' exists, the plural form is the standard way to refer to the collective group of emergency professionals.