(NEWSER) – One of the two winners of the $587.5 million Powerball jackpot has been identified: Missourians Cindy and Mark Hill, reports NBC News. "I think I'm having a heart attack," Cindy, a laid-off office manager, told her 52-year-old husband after checking the numbers yesterday morning. She then drove to the home of her mother-in-law, who verified the numbers were, indeed, the lucky ones. Mark, who works at a meat processing plant, met her there. "You know it's the Show Me State, so he said, 'Show me,'" says Cindy. The winning ticket was among five the couple bought at a Dearborn Trex Mart convenience store.

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