Complex sentence: At Royal Naval Air Stations, Aircraft Handlers are employed mainly at fire stations where they will use two types of fire vehicle, these being the Rapid Intervention Vehicle (RIV) and the Major Foam Vehicle (MFV).
Split into simpler sentences: At Royal Naval Air Stations, Aircraft Handlers are employed mainly at fire stations where they will use two types of fire vehcile. These being the Rapid Intervention Vehcile (RIV) and the Major Foam Vehcile (MFV).