Ems: Street Saviors

Day and night they roam the gritty streets armed with only the latest medical gear and a siren. At any moment, their radio could send them plunging into the unknown: cardiac arrest, gunshots, or a fatality. The largest Emergency Medical Service in the world, New York City's EMS answers 1.3 million calls a year. Working frantically in situations where seconds mark the difference between life and death, six-hundred and fifty paramedics and 1,700 emergency medical technicians patrol the city 24 hours a day, seven days a week. With graphic footage of real-life situations, EMERGENCY! goes behind the scenes with the nation's busiest street crew to see how lives are saved, and sometimes lost.

• documentary