About 20 percent of them happen in public places like airports.
When that happens, if someone is trained in CPR or has easy and quick access to defibrillators, it can double or triple the survival chances.
Many airports have installed these defibrillators in multiple locations around their terminals.
These machines literally talk you through the process.
That means any bystander can help—and any assistance can make a difference.
Now, at airports like Cincinnati and Orlando, the American Heart Association has installed CPR training kiosks.
You can learn how to save lives while waiting for your flight.