London Metropolitan Police and emergency services take part in Exercise Strong Tower, removing actors as casualties from the scene of a mock terror attack at a disused underground station in central ... more 
London Metropolitan Police and emergency services take part in Exercise Strong Tower, removing actors as casualties from the scene of a mock terror attack at a disused underground station in central London, Britain June 30, 2015. London police held their biggest-ever terrorism drill on Tuesday, pitting the emergency services against a group of marauding attackers, nearly 10 years since four young British Islamists killed 52 people in suicide bombings on London's transport network in July 2005. REUTERS/Peter Nicholls less 
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Reuters | Photo By PETER NICHOLLS / REUTERS
Tue, Jun 30, 2015 9:03 AM EDT