41 years ago today, the final episode of Emergency! aired. It debuted as a midseason replacement on January 15, 1972, on NBC, replacing the two short-lived series The Partners and The Good Life, and ran until May 28, 1977, with six additional two-hour television films during the following two years.

Emergency! was created and produced by Jack Webb and Robert A. Cinader, both of whom were also responsible for the police dramas Adam-12 and Dragnet. Harold Jack Bloom is also credited as a creator; Webb does not receive screen credit as a creator in the show’s original TV-movie pilot, being only credited as its director.

The series starred Randolph Mantooth and Kevin Tighe as two specially-trained firefighters who formed Squad 51, part of a then-innovative field known as paramedics who were authorized to provide initial emergency medical care to victims of accidents, fire and other incidents in the field. The plot of the initial pilot film described the passing of state legislation, signed by Governor Ronald Reagan, and was called the The Wedsworth-Townsend Act. It allowed the creation of paramedic units. Squad 51 worked in concert with the (fictional) Rampart General Hospital medical staff (portrayed by Robert Fuller, Julie London, and Bobby Troup), who took over each patient’s case from the paramedics who worked in the field.

Nearly 30 years after Emergency! debuted, the Smithsonian Institution accepted Emergency! memorabilia into its National History Museum, public-service section, including their helmets, turnouts, biophone, and defibrillator.