A mass gathering always presents a challenge to the medical providers of a city since preparations must be made to cover any potential disasters, big or small. With a prediction of several hundred thousand people coming to the New York City area to participate in the Papal Masses, the New York City-Emergency Medical Services readied its forces of physicians, paramedics, and emergency medical technicians from throughout the region. Extensive multiagency planning involving a Total Quality Management process was integral to the success of covering the events.