A walker (m, 48) slipped on steep ground, sustaining a dislocation fracture to his right ankle. Another walker used his ‘personal locator beacon’ to call for help. The call was directed, initially, to Upper Wharfedale Rescue Association, then to Swaledale MRT and then to CRO. On seeing the severity of the injury, the first two members to reach the patient requested evacuation by air ambulance, in order to minimise movement…