(U.S. Attorney's Office/CNN) – U.S. Security officials are warning airlines about a potential new shoe bomb threat.
New intelligence suggests terrorists may try to hide explosives in their shoes, but officials stress there is no specific threat or plot.
Demonstrations of shoe bombs indicate they can be very powerful.
Shortly after the Sept. 11 attacks, passengers on an American Airlines flight stopped Richard Reid from detonating explosives in his shoes. He pleaded guilty and is serving a life sentence.
Terrorism experts say that airlines continue to be a target of terrorists.
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