The BLS DVD Set is to be used by BLS Instructors to teach the BLS Course, the BLS Renewal Course, and to conduct skills practice and testing sessions for Heart-Code® BLS. Each disc allows BLS Instructors to choose one of two tracks, in-facility or prehospital, based on their specific student audience.This product has been updated with new science from the 2020 Guidelines for CPR and ECC and replaces the previous version