Answer:
The first responders in this scenario were the medical team and the police officer.
Step-by-step explanation:
A first responder is someone whose job requires him/her to be among the first people to respond to an emergency and is responsible for the preservation of life (help any injured people), property and any evidence regarding what caused the emergency. First responders are usually medical personnel, firefighters and police officers.
In this case, being a first responder doesn't mean that it was the first person who arrived at the scene, both the medical team and the police officer are the first responders even though the medical got there before.