Yes. According to the Centers for Disease Control (CDC), if cardiac arrest happens to someone near you, it's better to act than to do nothing, even if you've never had formal training or your certification is expired. Call 9-1-1, send someone to get the AED, begin CPR, and continue CPR until medical professionals arrive. Even if your technique isn't perfect, it'll give the victim a far better chance of survival. Of course, the best way to save lives is by staying current on your CPR certification, so if it has expired, go to our Find a Course page to sign up for you CPR training.