Rescue and Fire Fighting Services (RFFS) is also commonly referred to as Aircraft Rescue and Fire Fighting (ARFF) and occasionally as Crash Fire Rescue (CFR). In all cases, these terms refer to the rescue and firefighting services provided at an aerodrome which are specifically dedicated to the support of safety in aircraft operation. This special category of firefighting involves incident response, hazard mitigation, evacuation, and possible rescue of passengers and crew of an aircraft involved in an aerodrome (or potentially off-aerodrome) ground emergency.