The automated external defibrillator is a portable, self-contained machine that can shock the heart back into rhythm.

CNN: Cardiac-arrest victims' parents push for school defibrillators

Two lives that could have been saved, their parents said, with one solution: an automated external defibrillator.

CNN: Cardiac-arrest victims' parents push for school defibrillators

Learn CPR and get training on an automated external defibrillator, or AED.

CNN: Water safety expert: 'Drowning doesn't just happen'