Rescue and Fire Fighting

according to ICAO Annex 14 Chapter 9.2
The level of protection normally available at an aerodrome should be expressed in terms of the category of the rescue and fire fighting services as described in ICAO Annex 14 Chapter 9.2 and
Aerodrome category for rescue and fire fighting
in accordance with the types and amounts of extinguishing agents normally available at the aerodrome.
Number of rescue and fire fighting vehicles

The minimum number of rescue and fire fighting vehicles provided at an aerodrome should be in accordance with the following tabulation:
Changes in the level of protection from that normally available at the aerodrome could result from a change in the availability of extinguishing agents, equipment to deliver the agents or personnel to operate the equipment, etc.

Therefore always check the NOTAM!