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Airline cockpit doors locked since 9/11 attacks
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21 years after 9/11, secondary barriers for cockpits still not mandatory
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AJ Finn on Twitter: "Cockpit door is ajar and it's all I can do not to stage an Airplane moment. 'Joey, do you like movies about gladiators?' #heathrowhereicome https://t.co/JO8twWFYQW" / Twitter
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21 years after 9/11, secondary barriers for cockpits still not mandatory
