Two employees walk between two Eurotunnel freight trains at the Channel tunnel maintenance center in Coquelles, near Calais, May 5, 2014. Eurotunnel prepares to celebrate the 20th anniversary of the ... more 
Two employees walk between two Eurotunnel freight trains at the Channel tunnel maintenance center in Coquelles, near Calais, May 5, 2014. Eurotunnel prepares to celebrate the 20th anniversary of the inauguration of the Channel Tunnel. The Channel Tunnel took six years to construct and was opened in 1994. REUTERS/Pascal Rossignol (FRANCE - Tags: POLITICS TRANSPORT BUSINESS) less 
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Reuters | Photo By PASCAL ROSSIGNOL / REUTERS
Mon, May 5, 2014 12:54 PM EDT