Laws have long prohibited airplane passengers from interfering with flight attendants and other crew members, but since the Sept. 11, 2001, terrorist attacks, efforts have accelerated to clamp down on such misconduct. Those who misbehave have been subjected to increasingly large fines, jail time and other punishments. "Now people are more hyper-vigilant on what occurs on aircrafts," said Ron Koziol of the FBI. "The U.S. government is more aware of what can occur on an aircraft, and [officials] don't want those issues causing the plane to be in an unsafe environment."
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