 The air ambulance headquarters are at Wellington in Somerset, but the helicopter is based at Henstridge Airfield in Somerset.The service operates an AgustaWestland AW169 helicopter, callsign "Helimed 10", which has been in service since June 2017.Travelling at speeds of up to , it can land in an area half the size of a tennis court and can reach anywhere in the two counties within twenty minutes of an emergency call.