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"Paging Dr. Strong. Paging Dr. Strong." When that seemingly routine message squawked over the public address system last Monday evening at the Corona Regional Medical Center, nearly all employees froze. Just weeks earlier, the 148-bed hospital in Southern California had established new security precautions. Staff members now knew the potentially deadly meaning of those six words: someone with a gun was in the building.

The terrifying drama that unfolded over the next 10 minutes has become all too familiar not only in America's hospitals but in virtually all public places once regarded as safe havens. At 6:20 p.m., Sopehia White, 31,...

Quotes of the Day »

RAY KELLY, New York City Police Commissioner, on the arrest of a New Jersey man in one of the nation's most baffling missing-children cases, the disappearance more than three decades ago of 6-year-old Etan Patz.
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