Basic Life Support, or BLS, generally refers to the type of care that first-responders, healthcare providers and public safety professionals provide to anyone who is experiencing cardiac arrest, respiratory distress or an obstructed airway. It requires knowledge and skills in cardiopulmonary resuscitation (CPR), using automated external defibrillators (AED) and relieving airway obstructions in patients of every age. BLS care to those in need, those working in basic life support also need to have critical-thinking and problem-solving skills, and be able to work as part of a team to deliver the best care possible and improve patient outcomes. American Red Cross Basic Life Support classes are developed under the guidance of, and reviewed by, the American Red Cross Scientific Advisory Council. Content in this program is consistent with: The International Liaison Committee on Resuscitation (ILCOR) 2015–2018 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science with Treatment Recommendations. The 2015–2018 American Heart Association Guidelines Update for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care.