HART NWAS HART members are specially recruited and trained personnel who provide the ambulance response to major incidents. These may involve Chemical, Biological, Radiological, Nuclear (CBRN) or Explosives (E) or other hazardous material, or could involve other complex incidents such as train crashes, large-scale motorway accidents, building collapses, significant fires or flooding. These scenarios could be the result of an accident, environment or could have been caused deliberately. The HART team works alongside fire and rescue services within the "inner cordon" (or "hot zone") of a major incident. Their job is to triage and treat casualties and to save lives in very difficult circumstances. The team also has a role in looking after other emergency service personnel who may become injured whilst attending incidents. To learn more about the HART Team and Dealing with Major incidents click here.