Lufthansa Airplanes are parked during a warning strike of employees of the German airliner Lufthansa in Duesseldorf, Germany, Monday, April 22, 2013.(AP Photo/Frank Augstein)

Associated Press
Lufthansa Airplanes are parked during a warning strike of employees of the German airliner Lufthansa in Duesseldorf, Germany, Monday, April 22, 2013.(AP Photo/Frank Augstein)
Lufthansa Airplanes are parked during a warning strike of employees of the German airliner Lufthansa in Duesseldorf, Germany, Monday, April 22, 2013.(AP Photo/Frank Augstein)
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