The Resuscitation Council (UK) reported that 1 person in 1,000 suffers from a cardiac arrest each year, equating to approximately 60,000 cardiac arrests annually. An Automated External Defibrillator (AED) is a life-saving piece of equipment for use on casualties suffering from a cardiac arrest. They are simple and extremely effective and are designed to be used by anyone. AEDs are designed to detect fatal cardiac arrhythmia and will analyse a casualty's heart rhythm.