The cases that are dependent on a specialized flight doctor and medical staff obtain help from airevac charters. There are patients who call for a foley catheter and other equipment — and these are the cases that cannot go on the your common planes. As you may not know , airevac fleets are needed considering that they do not want to go on regular airways ; because of the fact that they are dependent on a medical technician. Almost all air ambulance services san antonio texas are fleets that are privately – run. air ambulance services san antonio texas can be contacted by the spouse of the patients with the helping hand of a certified special case manager. It is common knowledge among emergency and medical professionals that air evacuation crews help transport those in need.