Aviation experts contend that even if intruders were able to access a control tower and disrupt operations, the nation's air traffic control system is designed with multiple back-ups so that other facilities could pick up control of the affected air space.

CNN: Union claims security lax at many air control towers

So does Dubai's spanking new airport, from which it took this correspondent just seven minutes to exit, including passport control, luggage pick-up and customs.

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The charity started to work with dogs, and they can now pick out cancer samples from control samples, but research has been mainly limited to bladder and prostate cancer.

BBC: Beds, Herts & Bucks