Are police officers firefighters

No, Firefighters actually fight fires, and Police Officers fight crime.

However! -In some municipalities (towns) in America, these professions are performed by people that are cross-trained. In fact, one town that I know of has their city employees trained as Police, Fire, AND Emergency Medical Technicians (EMTs are ambulance-riding first-responders) that work three 24-hour shifts per week. So for the first eight hours of their shift, they are Police Officers. The second eight hours they are Firefighters, and the third eight hours of their shift, they are EMTs. Then they get 24 hours off.