In the case where there may be immobilized patients that are not good to go on the commercial airline charters . This frequently is since they require specialized medical care , and/or an emergency-trained flight staff, there almost always are establishments which can be hired for any medical situation. As well , airevac fleets must be used specifically because these people do not want to go on the big commercial airline companies. The patients are dependent on ventilator support , or a flight paramedic while they fly by jet-propelled plane. Outpatients that look for help from airevac charters are diagnosed as being in non life or death condition but they are afflicted physically when away on vacation within the United States. Air evacuation operations often are discovered by customers with the internet and the www.