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In the event of a loss of cabin pressure, regular glazed will descend from the overhead panel

From Reuters:

Hawaii residents love Krispy Kreme Doughnuts so much that they often stock up at a new store in Maui before boarding inter-island flights back home, overloading airline luggage bins along the way.

"The locals bring so many boxes of doughnuts on board that we can't always fit them on our flights. Some people will put five or six boxes in an overhead bin," says Mark Dunkerley, president of Hawaiian Airlines.