"Mobile Surgery Units" (MSUs) are high-tech mobile ambulatory surgery facilities. Also known as "hospital on wheels", Mobile Surgery Units are designed to deliver on-site surgical services. As an example, our "Mobile Surgery Units" are used by hospitals renovating operating rooms and to provide additional operating room capacity. Mobile Surgery Units can support physician groups with insufficient case volume to justify a free-standing Ambulatory Surgery Center (ASC) or provide on-site surgery at correctional facilities. One value of the MSU is its ability to support disaster readiness applications and international and humanitarian missions.