Parents, teachers, students, and school administrators are encouraged to visit the web site below to register their school for a chance to win a ZOLL AED Plus automated external defibrillator and three sets of 10 Duracell Ultra Photo Lithium batteries to power the system for years to come. A total of 51 life-saving packages will be given away–one to each state and the District of Columbia. ZOLL Medical Corp. and Duracell are sponsoring the contest to raise awareness about the need for defibrillators in schools. Sudden cardiac arrest strikes 340,000 Americans each year, including children and teens, usually without warning. According to the American Heart Association, early use of automated external defibrillators–portable devices that analyze the heart’s rhythm and deliver an electric shock to re-establish a normal heartbeat–could raise the chance of saving a life by as much as 20 percent or more.