 This service is provided free at the point of delivery, although a charge is often made to the event organiser for provision of the service at their event, to subsidise the Charity's free cover of community and charity events, as well as the organisation's wider charitable output.In addition to providing volunteer first aiders for events, where necessary St John Ambulance can provide paramedics, doctors, nurses and cycle responders, as well as mobile treatment centres, ambulances and other medical provision.Alongside support functions including command & control vehicles and incident catering units.