emergency services
If you can't provide your location to the dispatcher, emergency responders won't know where you are.
Emergency responders have master keys that can open key boxes to community gates and buildings.
At the moment there is only enough vaccine to vaccinate health care workers and emergency responders.
The city is unable to deploy all of its ambulances because of a lack of emergency responders.

SMART Vocabulary: related words and phrases

Emergency services in general
911
999
aid station
air ambulance
air drop
air-dash
Amber Alert
blue-light
CFR
coastguard
drop
lifeguard
lifesaver
lockdown
marshal
Mayday
rescue
Silver Alert
SOS
the RAC