London stages Olympics security drill

Thousands take part in exercise to prepare for the possibility of city's underground system being targeted.

    London's emergency services have been practising their response in the event of an attack during the summer Olympic Games, which is set to be staged in the UK capital this year.

    About 2,500 people were involved in the security drill, which involved helicopters and ambulances, to prepare for the possibility of the city's underground system being targeted during the games.

    Al Jazeera's Simon McGregor reports.

    SOURCE: Al Jazeera


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