Soldiers the Royal Artillery regiment in the British army stand guarding the entrance to  the volleyball venue in central London next to the IOC rings logo on day 4 of the London 2012 Olympic Games. A total of 18,000 defence personel were called upon to make the Games secure following the failure by security contractor G4S to provide enough private guards. The extra personnel have been drafted in amid continuing fears that the private security contractor's handling of the £284m contract remains a risk to the Games.
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