FILE - This is a Sunday, Dec. 9, 2012 file photo of 

FILE - This is a Sunday, Dec. 9, 2012 file photo of  police, firefighters and ambulance trucks are parked in front of Fisht Olympic stadium, at the Black Sea resort of Sochi, Russia. Drones hovering overhead, robotic vehicles roaming Olympic venues to search for explosives, high-speed patrol boats sweeping the Black Sea coast _ Russian officials say they will be using cutting-edge technology to make sure the 2014 Winter Games in Sochi will be “the safest Olympics in history.”  (AP Photo/Ivan Sekretarev, File)
Associated Press
FILE - This is a Sunday, Dec. 9, 2012 file photo of police, firefighters and ambulance trucks are parked in front of Fisht Olympic stadium, at the Black Sea resort of Sochi, Russia. Drones hovering overhead, robotic vehicles roaming Olympic venues to search for explosives, high-speed patrol boats sweeping the Black Sea coast _ Russian officials say they will be using cutting-edge technology to make sure the 2014 Winter Games in Sochi will be “the safest Olympics in history.” (AP Photo/Ivan Sekretarev, File)
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