FILE - In this Monday, Oct. 28, 2013 file photo a general view of the newly built railway station "Adler" at the Black Sea resort of Sochi, southern Russia. The organizers of the 2014 Winter Games in Sochi have introduced some of the most extensive identity checks and sweeping security measures ever to be seen at an international sports event, trying to fulfill their pledge to make the Winter Games in Sochi “the safest Olympics in history.”  (AP Photo/Alexander Zemlianichenko, File)

Photo by: Alexander Zemlianichenko

FILE - In this Monday, Oct. 28, 2013 file photo a general view of the newly built railway station "Adler" at the Black Sea resort of Sochi, southern Russia. The organizers of the 2014 Winter Games in Sochi have introduced some of the most extensive identity checks and sweeping security measures ever to be seen at an international sports event, trying to fulfill their pledge to make the Winter Games in Sochi “the safest Olympics in history.” (AP Photo/Alexander Zemlianichenko, File)