Dr Dan Ellis MBBS (London), FIMC RCSEd, FCEM, FACEM, FFICM, FRCS(Eng), MRCP(UK), MRCA, DMCC, EDIC Director, MedSTAR Emergency Medical Retrieval Service, South Australia; Deputy Director of Trauma and Senior Consultant in Emergency Medicine, Royal Adelaide Hospital, Adelaide, South Australia; Clinical Senior Lecturer, Acute Care Medicine, University of Adelaide; South Australia Emeritus Consultant, Helicopter Emergency Medical Service (HEMS), London, UK