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This photo provided by Nancy Crowley shows Jack Crowley. Crowley was 15 when a baseball hit him in the chest and stopped his heart. The Long Island teen survived thanks to a police officer who grabbed a defibrillator and shocked him back to life. A U.S. organization that oversees athletic equipment has proposed the first performance standard for chest protectors to reduce the risk from those blows, a step that could lead to updated gear. (Nancy Crowley via AP)

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