Emergency!

Understanding (3x13)

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John gives Chet his guitar. At an explosive structure fire, a girl's horse is trapped in a burning barn. Dr. Brackett and Nurse McCall lecture a man who keeps forgetting his insulin shots. A girl calls the hospital, threatening suicide; firemen stand by while hospital workers attempt to trace the call. A hostage in a bank robbery has heart problems; the paramedics must treat him at gunpoint.