Meaning of the word "first responder" in English

What does "first responder" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

first responder

US /ˌfɝːst rɪˈspɑːn.dɚ/
UK /ˌfɜːst rɪˈspɒn.də/
"first responder" picture

Noun

a person, such as a police officer, firefighter, or EMT, who is among the first to arrive and provide assistance at the scene of an emergency

Example:
The first responders arrived at the crash site within minutes.
We must provide better mental health support for every first responder.