"If we lose people 1, 2, 10, 20, 30, boy that can really harm our emergency responses," said Fresno Fire Chief Kerri Donis.
The city of Fresno is actively working to prevent that from happening.
To protect the firefighters and police officers from the spread of COVID-19 they will now be required to wear face masks while on the job.
"Police and fire, that is really a priority to make sure that they are going to try and stay healthy and safe throughout this pandemic," said Mark Standriff with the city of Fresno.
Currently, the city has a limited supply, but officials are working on acquiring more surgical and cloth masks for first responders.
"Surgical masks are really more for instances when they're making a medical call or in some way, shape or form are concerned that the person that they are dealing with might be infected," said Standriff.