 In most places, the EMS can be summoned by members of the public (as well as medical facilities, other emergency services, businesses and authorities) via an emergency telephone number which puts them in contact with a control facility, which will then dispatch a suitable resource for the situation.Ambulances are the primary vehicles for delivering EMS, though some also use cars, motorcycles, aircraft, or boats.EMS agencies may also operate a non-emergency patient transport service, and some have rescue squads to provide technical rescue services.