Emergency First Response Primary and Secondary Care, which means CPR (Cardio-Pulmonary resuscitation) and First aid. EFR is a PADI affiliate that specializes in teaching lifesaving skills – so they’re for anyone, not just divers. You gain the confidence that you are prepared to help in an emergency. You learn about BLS (Basic Life Support), CPR and rescue breathing at the layperson level, AED (Automated External Defibrillator) use (optional), preventing and caring for shock, spinal injury management, and basic first aid. To enroll in EFR courses the only think you need is to care about other people.