In 1979, Cobb and UW professor Mickey Eisenberg began training fire department emergency medical technician - Basics (EMT-Bs) to perform the administration of defibrillation for patients in cardiac arrest since the EMTs were usually at the patient's side several minutes before the paramedics. Eisenberg began training 9-1-1 dispatchers to provide instructions to lay-persons on how to perform CPR in 1982. With the introduction of automatic external defibrillators (AEDs) in 1984, EMTs were able to defibrillate patients in cardiac arrest even more quickly.