In 1999, a private jet carrying golfer Payne Stewart and five others crashed after apparently losing cabin pressure "for undetermined reasons" after takeoff from Florida, the National Transportation Safety Board found.

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To fight surgical infections, often caused by harried doctors forgetting to administer preoperative antibiotics, the hospital initiated a pre-op pause, like the one for pilots before a takeoff: Everyone stops for 30 seconds to make sure all safety steps have been taken.

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