For recreational scuba divers, emergency oxygen (O2) is the primary first aid given to individuals suffering from a near drowning or decompression illness. Having emergency O2 available at dive locations is especially important to divers suffering from these maladies and has become a standard practice for divers. Along with the availability of oxygen at dive sites, first responders must know how to provide oxygen in an emergency. This course is highly recommended if you are taking the Rescue Diver Course.