Reinforced cockpit doors, secondary barriers, armed pilots and undercover air marshals are among the security measures in place to keep flights safe

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The officer who discovered the replica quickly notified a TSA explosives specialist

© <p>TSA </p>

The U.K.'s Competition and Markets Authority says they will have an update on the investigation within six months

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The airport is urging passengers to check directly with their airlines regarding the status of upcoming flights

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