The Steven M. Gootter Foundation, a Tucson-based charity, will equip 50 local police cars with automated external defibrillators.

AED's are medical devices that deliver an electrical shock to re-establish the heart’s rhythm during a sudden cardiac arrest.

The AED-equipped patrol cars will enable first responders to immediately administer treatment. The chance of surviving sudden cardiac arrest drops 10 percent for every minute defibrillation is delayed, according to the American Red Cross.

Sudden cardiac arrest is one of the leading causes of death in the United States, killing approximately 350,000 people each year.

The TPD patrol cars will be equipped with AED's by June.