The invention relates to a vehicle used in transporting or treating large numbers of victims or patients from a mass-casualty incident to or from a hospital in an evacuation situation. The typical vehicle contains a stacked stretcher system, a loading ramp system, and an oxygen system. This vehicle must have an independent energy source or must be capable of being powered by an outside energy source. The vehicle can be flexible enough to provide facilities for treatment of victims either at the site of a disaster, in route from the disaster, at any remote site, or near a healthcare facility. A variation of the vehicle contains refrigeration or freezer units and is capable of transporting or maintaining casualties until mortuary services can be obtained. Variations of the equipment include trays made of stainless steel, stretchers that can be easily cleaned and that allow for easy drainage of liquids.