When a person collapses in public, most bystanders will scan the room in hopes of finding “that person” who knows what to do before stepping in themselves. Whether that person is a doctor, a first responder, or a CPR-certified layperson, the one thing they all have in common in an emergency situation is the knowledge of the ABC of CPR. Read on to find out more about the ABC of CPR, who updated the process to CAB, and why this update is so crucial for increasing CPR survival rates.