Wyo. Stat. 1-1-120(b)
Liability: Volunteer Emergency Medical Services Provider
An individual who is a volunteer ambulance staffer, an unpaid emergency rescue vehicle operator, or a physician medical director who, in good faith, provides emergency medical services will not be held legally responsible for acting or failing to act. They can be held legally responsible if acting with extreme carelessness or intent to cause harm.
Persons rendering emergency assistance exempt from civil liability
(b) Persons or organizations operating volunteer ambulances or rescue vehicles supported by public or private funds, staffed by unpaid volunteers, and which make no charge, or charge an incidental service or user fee, for services rendered during medical emergencies, and the unpaid volunteers who staff ambulances and rescue vehicles are not liable for any civil damages for acts or omissions in good faith in furnishing emergency medical services. This immunity does not apply to acts or omissions constituting gross negligence or willful or wanton misconduct. For purposes of this section, “unpaid volunteers” means persons who either receive incidental remuneration on a per call basis or receive no more than one thousand dollars ($1,000.00) annually for volunteer ambulance and rescue activities. The immunity provided by this subsection shall extend to a physician while serving in his capacity as medical director of any ambulance service, to hospitals and hospital employees for activities directly related to providing clinical training as part of an emergency medical service class approved by the department of health, and to students while participating in emergency medical services training approved by the department of health. If an unpaid volunteer's, medical director's, hospital's or trainee's acts or omissions are subject to the provisions of the Wyoming Governmental Claims Act, immunity under this section is waived to the extent of the maximum liability provided under W.S. 1-39-118.